- A_refReference area [m^2]
C++ Type:double
Controllable:No
Description:Reference area [m^2]
- connectionsJunction connections
C++ Type:std::vector<BoundaryName>
Controllable:No
Description:Junction connections
- headPump head [m]
C++ Type:double
Controllable:Yes
Description:Pump head [m]
- positionSpatial position of the center of the junction [m]
C++ Type:libMesh::Point
Controllable:No
Description:Spatial position of the center of the junction [m]
- volumeVolume of the junction [m^3]
C++ Type:double
Controllable:No
Description:Volume of the junction [m^3]
Pump1Phase
Pump between two 1-phase flow channels that has a non-zero volume
This component implements a pump model for 1-phase flow that has a volume, which is directly supplied by the user. This component is heavily based off of VolumeJunction1Phase. The main difference is that there is only one momentum conservation equation (the ones for rhovV and rhowV were removed) since the pump inlet and outlet are aligned in the rhouV direction. Also there are new pump head terms added to the momentum and energy equations.
Input Parameters
- K0Form loss factor [-]
Default:0
C++ Type:double
Controllable:No
Description:Form loss factor [-]
- initial_TInitial temperature [K]
C++ Type:FunctionName
Controllable:No
Description:Initial temperature [K]
- initial_pInitial pressure [Pa]
C++ Type:FunctionName
Controllable:No
Description:Initial pressure [Pa]
- initial_vel_xInitial velocity in x-direction [m/s]
C++ Type:FunctionName
Controllable:No
Description:Initial velocity in x-direction [m/s]
- initial_vel_yInitial velocity in y-direction [m/s]
C++ Type:FunctionName
Controllable:No
Description:Initial velocity in y-direction [m/s]
- initial_vel_zInitial velocity in z-direction [m/s]
C++ Type:FunctionName
Controllable:No
Description:Initial velocity in z-direction [m/s]
- scaling_factor_rhoEV1Scaling factor for rho*E*V [-]
Default:1
C++ Type:double
Controllable:No
Description:Scaling factor for rho*E*V [-]
- scaling_factor_rhoV1Scaling factor for rho*V [-]
Default:1
C++ Type:double
Controllable:No
Description:Scaling factor for rho*V [-]
- scaling_factor_rhouV1Scaling factor for rho*u*V [-]
Default:1
C++ Type:double
Controllable:No
Description:Scaling factor for rho*u*V [-]
- scaling_factor_rhovV1Scaling factor for rho*v*V [-]
Default:1
C++ Type:double
Controllable:No
Description:Scaling factor for rho*v*V [-]
- scaling_factor_rhowV1Scaling factor for rho*w*V [-]
Default:1
C++ Type:double
Controllable:No
Description:Scaling factor for rho*w*V [-]
Optional Parameters
- control_tagsAdds user-defined labels for accessing object parameters via control logic.
C++ Type:std::vector<std::string>
Controllable:No
Description:Adds user-defined labels for accessing object parameters via control logic.
- enableTrueSet the enabled status of the MooseObject.
Default:True
C++ Type:bool
Controllable:No
Description:Set the enabled status of the MooseObject.
Advanced Parameters
Input Files
- (modules/thermal_hydraulics/tutorials/single_phase_flow/05_secondary_side.i)
- (modules/thermal_hydraulics/test/tests/components/pump_1phase/jacobian.i)
- (modules/thermal_hydraulics/test/tests/components/pump_1phase/pipe_friction_pump_head_balance.i)
- (modules/thermal_hydraulics/test/tests/components/pump_1phase/clg.head.i)
- (modules/thermal_hydraulics/test/tests/components/pump_1phase/pump_loop.i)
- (modules/thermal_hydraulics/test/tests/components/pump_1phase/pump_pressure_check.i)
- (modules/thermal_hydraulics/tutorials/single_phase_flow/04_loop.i)
- (modules/thermal_hydraulics/test/tests/components/pump_1phase/pump_mass_energy_conservation.i)
- (modules/thermal_hydraulics/tutorials/single_phase_flow/06_custom_closures.i)
References
No citations exist within this document.(modules/thermal_hydraulics/tutorials/single_phase_flow/05_secondary_side.i)
T_in = 300. # K
m_dot_in = 1e-4 # kg/s
press = 1e5 # Pa
# core parameters
core_length = 1. # m
core_n_elems = 10
core_dia = ${units 2. cm -> m}
core_pitch = ${units 8.7 cm -> m}
# pipe parameters
pipe_dia = ${units 10. cm -> m}
tot_power = 100 # W
# heat exchanger parameters
hx_dia_inner = ${units 10. cm -> m}
hx_wall_thickness = ${units 5. mm -> m}
hx_dia_outer = ${units 50. cm -> m}
hx_radius_wall = ${fparse hx_dia_inner / 2. + hx_wall_thickness}
hx_length = 1 # m
hx_n_elems = 10
m_dot_sec_in = 1 # kg/s
[GlobalParams]
initial_p = ${press}
initial_vel = 0
initial_T = ${T_in}
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
rdg_slope_reconstruction = full
closures = simple_closures
fp = he
f = 0.4
[]
[Functions]
[m_dot_sec_fn]
type = PiecewiseLinear
xy_data = '
0 0
100 ${m_dot_sec_in}'
[]
[]
[Modules/FluidProperties]
[he]
type = IdealGasFluidProperties
molar_mass = 4e-3
gamma = 1.67
k = 0.2556
mu = 3.22639e-5
[]
[water]
type = StiffenedGasFluidProperties
gamma = 2.35
cv = 1816.0
q = -1.167e6
p_inf = 1.0e9
q_prime = 0
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[HeatStructureMaterials]
[steel]
type = SolidMaterialProperties
rho = 8050
k = 45
cp = 466
[]
[]
[Components]
[total_power]
type = TotalPower
power = ${tot_power}
[]
[core_chan]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
A = ${fparse core_pitch * core_pitch - pi * core_dia * core_dia / 4.}
D_h = ${core_dia}
f = 1.6
[]
[core_hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
names = 'block'
widths = '${fparse core_dia / 2.}'
materials = 'steel'
n_part_elems = 3
[]
[core_heating]
type = HeatSourceFromTotalPower
hs = core_hs
regions = block
power = total_power
[]
[core_ht]
type = HeatTransferFromHeatStructure1Phase
flow_channel = core_chan
hs = core_hs
hs_side = outer
P_hf = ${fparse pi * core_dia}
Hw = 1.36
[]
[jct1]
type = JunctionParallelChannels1Phase
position = '0 0 1'
connections = 'core_chan:out up_pipe:in'
volume = 1e-3
[]
[up_pipe]
type = FlowChannel1Phase
position = '0 0 1'
orientation = '0 0 1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct2]
type = VolumeJunction1Phase
position = '0 0 2'
connections = 'up_pipe:out top_pipe:in'
volume = 1e-3
[]
[top_pipe]
type = FlowChannel1Phase
position = '0 0 2'
orientation = '1 0 0'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct3]
type = VolumeJunction1Phase
position = '1 0 2'
connections = 'top_pipe:out hx/pri:in'
volume = 1e-3
[]
[hx]
[pri]
type = FlowChannel1Phase
position = '1 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
A = ${fparse pi * hx_dia_inner * hx_dia_inner / 4.}
D_h = ${hx_dia_inner}
[]
[ht_pri]
type = HeatTransferFromHeatStructure1Phase
hs = hx/wall
hs_side = inner
flow_channel = hx/pri
Hw = 0.97
[]
[wall]
type = HeatStructureCylindrical
position = '1 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
widths = '${hx_wall_thickness}'
n_part_elems = '3'
materials = 'steel'
names = '0'
inner_radius = ${fparse hx_dia_inner / 2.}
[]
[ht_sec]
type = HeatTransferFromHeatStructure1Phase
hs = hx/wall
hs_side = outer
flow_channel = hx/sec
P_hf = ${fparse 2 * pi * hx_radius_wall}
Hw = 36
[]
[sec]
type = FlowChannel1Phase
position = '${fparse 1 + hx_wall_thickness} 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
A = ${fparse pi * (hx_dia_outer * hx_dia_outer / 4. - hx_radius_wall * hx_radius_wall)}
D_h = ${fparse hx_dia_outer - (2 * hx_radius_wall)}
fp = water
f = 0.075
[]
[]
[jct4]
type = VolumeJunction1Phase
position = '1 0 1'
connections = 'hx/pri:out down_pipe:in'
volume = 1e-3
[]
[down_pipe]
type = FlowChannel1Phase
position = '1 0 1'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct5]
type = VolumeJunction1Phase
position = '1 0 0'
connections = 'down_pipe:out bottom_b:in'
volume = 1e-3
[]
[bottom_b]
type = FlowChannel1Phase
position = '1 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[pump]
type = Pump1Phase
position = '0.5 0 0'
connections = 'bottom_b:out bottom_a:in'
volume = 1e-3
A_ref = ${fparse pi * pipe_dia * pipe_dia / 4.}
head = 0
[]
[bottom_a]
type = FlowChannel1Phase
position = '0.5 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct6]
type = VolumeJunction1Phase
position = '0 0 0'
connections = 'bottom_a:out core_chan:in'
volume = 1e-3
[]
[inlet_sec]
type = InletMassFlowRateTemperature1Phase
input = 'hx/sec:out'
m_dot = 0
T = 300
[]
[outlet_sec]
type = Outlet1Phase
input = 'hx/sec:in'
p = ${press}
[]
[]
[ControlLogic]
[set_point]
type = GetFunctionValueControl
function = ${m_dot_in}
[]
[pid]
type = PIDControl
initial_value = 0
set_point = set_point:value
input = m_dot_pump
K_p = 250
K_i = 0.5
K_d = 0
[]
[set_pump_head]
type = SetComponentRealValueControl
component = pump
parameter = head
value = pid:output
[]
[m_dot_sec_inlet_ctrl]
type = GetFunctionValueControl
function = m_dot_sec_fn
[]
[set_m_dot_sec_ctrl]
type = SetComponentRealValueControl
component = inlet_sec
parameter = m_dot
value = m_dot_sec_inlet_ctrl:value
[]
[]
[Postprocessors]
[m_dot_pump]
type = ADFlowJunctionFlux1Phase
boundary = core_chan:in
connection_index = 1
equation = mass
junction = jct6
[]
[core_T_out]
type = SideAverageValue
boundary = core_chan:out
variable = T
[]
[hx_pri_T_out]
type = SideAverageValue
boundary = hx/pri:out
variable = T
[]
[hx_sec_T_in]
type = SideAverageValue
boundary = inlet_sec
variable = T
[]
[hx_sec_T_out]
type = SideAverageValue
boundary = outlet_sec
variable = T
[]
[]
[Executioner]
type = Transient
start_time = 0
[TimeStepper]
type = SolutionTimeAdaptiveDT
dt = 1
[]
dtmax = 100
end_time = 50000
line_search = basic
solve_type = NEWTON
nl_rel_tol = 1e-5
nl_abs_tol = 1e-5
nl_max_its = 5
[]
[Outputs]
exodus = true
[console]
type = Console
max_rows = 1
outlier_variable_norms = false
[]
print_linear_residuals = false
[]
(modules/thermal_hydraulics/test/tests/components/pump_1phase/jacobian.i)
[GlobalParams]
initial_T = 393.15
initial_vel = 0
initial_p = 17e+06
f = 0
fp = fp
closures = simple_closures
A = 1
gravity_vector = '0 0 0'
[]
[Modules/FluidProperties]
[fp]
type = StiffenedGasFluidProperties
gamma = 2.35
q = -1167e3
q_prime = 0
p_inf = 1.e9
cv = 1816
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[Components]
[pipe1]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '1 0 0'
length = 1
n_elems = 2
gravity_vector = '0 0 0'
[]
[pump]
type = Pump1Phase
connections = 'pipe1:out pipe2:in'
position = '1.02 0 0'
head = 95
A_ref = 1
volume = 1
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
[]
[pipe2]
type = FlowChannel1Phase
position = '1.04 0 0'
orientation = '1 0 0'
length = 1
n_elems = 2
[]
[]
[Preconditioning]
[pc]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
dt = 1e-2
num_steps = 1
abort_on_solve_fail = true
solve_type = 'NEWTON'
line_search = 'basic'
nl_rel_tol = 1e-8
nl_abs_tol = 1e-6
nl_max_its = 15
l_tol = 1e-4
l_max_its = 10
petsc_options_iname = '-snes_test_err'
petsc_options_value = '1e-9'
[Quadrature]
type = GAUSS
order = SECOND
[]
[]
(modules/thermal_hydraulics/test/tests/components/pump_1phase/pipe_friction_pump_head_balance.i)
# This test balances the pipe friction pressure drop with the pump head pressure rise and runs to steady state.
[GlobalParams]
initial_T = 393.15
initial_vel = 0.0
A = 0.567
fp = fp
scaling_factor_1phase = '0.04 0.04 0.04e-5'
closures = simple_closures
[]
[Modules/FluidProperties]
[fp]
type = StiffenedGasFluidProperties
gamma = 2.35
q = -1167e3
q_prime = 0
p_inf = 1.e9
cv = 1816
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[Components]
[pipe1]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '1 0 0'
length = 10
initial_p = 1.35e+07
n_elems = 20
f = 5000
gravity_vector = '0 0 0'
[]
[pump]
type = Pump1Phase
connections = 'pipe1:out pipe1:in'
position = '1.02 0 0'
initial_p = 1.3e+07
initial_vel_x = 1
initial_vel_y = 0
initial_vel_z = 0
scaling_factor_rhoV = 1
scaling_factor_rhouV = 1
scaling_factor_rhoEV = 1e-5
head = 8
volume = 0.567
A_ref = 0.567
[]
[]
[Preconditioning]
[pc]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
dt = 1.e-3
num_steps = 38
abort_on_solve_fail = true
solve_type = 'PJFNK'
line_search = 'basic'
nl_rel_tol = 1e-8
nl_abs_tol = 1e-6
nl_max_its = 15
l_tol = 1e-4
l_max_its = 10
[Quadrature]
type = GAUSS
order = SECOND
[]
[]
[Outputs]
[out_x]
type = Exodus
show = 'p T vel'
[]
velocity_as_vector = false
[]
(modules/thermal_hydraulics/test/tests/components/pump_1phase/clg.head.i)
[GlobalParams]
initial_T = 393.15
initial_vel = 0.0372
f = 0
fp = fp
scaling_factor_1phase = '1e-2 1e-2 1e-5'
closures = simple_closures
[]
[Modules/FluidProperties]
[fp]
type = StiffenedGasFluidProperties
gamma = 2.35
q = -1167e3
q_prime = 0
p_inf = 1.e9
cv = 1816
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[Functions]
[pump_head_fn]
type = PiecewiseLinear
x = '0 0.5'
y = '0 1 '
[]
[]
[Components]
[inlet]
type = InletMassFlowRateTemperature1Phase
input = 'pipe1:in'
m_dot = 20
T = 393.15
[]
[pipe1]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '1 0 0'
length = 1
n_elems = 10
A = 0.567
initial_p = 1.318964e+07
[]
[pump]
type = Pump1Phase
connections = 'pipe1:out pipe2:in'
position = '1.02 0 0'
head = 0
volume = 0.567
A_ref = 0.567
initial_p = 1.318964e+07
initial_vel_x = 0.0372
initial_vel_y = 0
initial_vel_z = 0
scaling_factor_rhoV = 1
scaling_factor_rhouV = 1
scaling_factor_rhoEV = 1e-5
[]
[pipe2]
type = FlowChannel1Phase
position = '1.04 0 0'
orientation = '1 0 0'
length = 0.96
n_elems = 10
A = 0.567
initial_p = 1.4072e+07
[]
[outlet]
type = Outlet1Phase
input = 'pipe2:out'
p = 1.4072e+07
[]
[]
[ControlLogic]
[pump_head_ctrl]
type = TimeFunctionComponentControl
component = pump
parameter = head
function = pump_head_fn
[]
[]
[Postprocessors]
[pump_head]
type = RealComponentParameterValuePostprocessor
component = pump
parameter = head
[]
[]
[Preconditioning]
[pc]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
dt = 0.1
num_steps = 10
abort_on_solve_fail = true
solve_type = 'PJFNK'
line_search = 'basic'
petsc_options_iname = '-pc_type'
petsc_options_value = 'lu'
nl_rel_tol = 1e-8
nl_abs_tol = 1e-6
nl_max_its = 15
l_tol = 1e-4
l_max_its = 10
[Quadrature]
type = GAUSS
order = SECOND
[]
[]
[Outputs]
[out]
type = CSV
show = 'pump_head'
[]
print_linear_residuals = false
[]
(modules/thermal_hydraulics/test/tests/components/pump_1phase/pump_loop.i)
[GlobalParams]
initial_T = 300
initial_p = 1e5
initial_vel = 0
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
scaling_factor_1phase = '1 1 1'
scaling_factor_rhoV = 1
scaling_factor_rhouV = 1
scaling_factor_rhovV = 1
scaling_factor_rhowV = 1
scaling_factor_rhoEV = 1
closures = simple_closures
[]
[Modules/FluidProperties]
[fp]
type = StiffenedGasFluidProperties
gamma = 2.35
q = -1167e3
q_prime = 0
p_inf = 1.e9
cv = 1816
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[Components]
[pipe1a]
type = FlowChannel1Phase
fp = fp
position = '0 0 0'
orientation = '1 0 0'
A = 0.785398163e-4 #1.0 cm (0.01 m) in diameter, A = 1/4 * PI * d^2
D_h = 0.01
f = 0.01
length = 0.5
n_elems = 2
[]
[pipe1b]
type = FlowChannel1Phase
fp = fp
position = '0.5 0 0'
orientation = '1 0 0'
A = 0.785398163e-4 #1.0 cm (0.01 m) in diameter, A = 1/4 * PI * d^2
D_h = 0.01
f = 0.01
length = 0.5
n_elems = 2
[]
[pipe2]
type = FlowChannel1Phase
fp = fp
position = '1 0 0'
orientation = '0 1 0'
A = 0.785398163e-4 #1.0 cm (0.01 m) in diameter, A = 1/4 * PI * d^2
D_h = 0.01
f = 0.01
length = 1
n_elems = 3
[]
[pipe3]
type = FlowChannel1Phase
fp = fp
position = '1 1 0'
orientation = '-1 0 0'
A = 0.785398163e-4 #1.0 cm (0.01 m) in diameter, A = 1/4 * PI * d^2
D_h = 0.01
f = 0.01
length = 1
n_elems = 3
[]
[pipe4]
type = FlowChannel1Phase
fp = fp
position = '0 1 0'
orientation = '0 -1 0'
A = 0.785398163e-4 #1.0 cm (0.01 m) in diameter, A = 1/4 * PI * d^2
D_h = 0.01
f = 0.01
length = 1
n_elems = 3
[]
[pipe5]
type = FlowChannel1Phase
fp = fp
position = '1 1 0'
orientation = '0 1 0'
A = 0.785398163e-4 #1.0 cm (0.01 m) in diameter, A = 1/4 * PI * d^2
D_h = 0.01
f = 0.01
length = 0.5
n_elems = 3
[]
[pump]
type = Pump1Phase
connections = 'pipe1a:out pipe1b:in'
head = 1.0
position = '0.5 0 0'
volume = 0.785398163e-3
A_ref = 0.785398163e-4
[]
[junction1]
type = VolumeJunction1Phase
connections = 'pipe1b:out pipe2:in'
volume = 0.785398163e-3
position = '1 0 0'
[]
[junction2]
type = VolumeJunction1Phase
connections = 'pipe2:out pipe3:in pipe5:in'
volume = 0.785398163e-3
position = '1 1 0'
[]
[junction3]
type = VolumeJunction1Phase
connections = 'pipe3:out pipe4:in'
volume = 0.785398163e-3
position = '0 1 0'
[]
[junction4]
type = VolumeJunction1Phase
connections = 'pipe4:out pipe1a:in'
volume = 0.785398163e-3
position = '0 0 0'
[]
[outlet]
type = InletStagnationPressureTemperature1Phase
input = 'pipe5:out'
p0 = 1.e5
T0 = 300
[]
[]
[Preconditioning]
[SMP_PJFNK]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'bdf2'
start_time = 0
num_steps = 10
dt = 1
abort_on_solve_fail = true
solve_type = 'PJFNK'
line_search = 'basic'
nl_rel_tol = 1e-6
nl_abs_tol = 1e-7
nl_max_its = 10
l_tol = 1e-3
l_max_its = 100
[Quadrature]
type = gauss
order = second
[]
[]
[Outputs]
[out]
type = Exodus
show = 'rhouA p'
execute_on = 'initial final'
[]
[]
(modules/thermal_hydraulics/test/tests/components/pump_1phase/pump_pressure_check.i)
# This test checks that the expected pressure rise due to the user supplied
# pump head matches the actual pressure rise across the pump.
# The orientation of flow channels in this test have no components in the z-direction
# due to the expected_pressure_rise_fcn not accounting for hydrostatic pressure.
head = 95.
dt = 0.1
g = 9.81
volume = 0.567
[GlobalParams]
initial_T = 393.15
initial_vel = 0.0372
A = 0.567
f = 0
fp = fp
scaling_factor_1phase = '1 1 1e-5'
closures = simple_closures
[]
[Modules/FluidProperties]
[fp]
type = StiffenedGasFluidProperties
gamma = 2.35
q = -1167e3
q_prime = 0
p_inf = 1.e9
cv = 1816
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[Functions]
[expected_pressure_rise_fcn]
type = ParsedFunction
value = 'rhoV * g * head / volume'
vars = 'rhoV g head volume'
vals = 'pump:rhoV ${g} ${head} ${volume}'
[]
[]
[Components]
[inlet]
type = InletMassFlowRateTemperature1Phase
input = 'pipe1:in'
m_dot = 20
T = 393.15
[]
[pipe1]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '1 0 0'
length = 1
initial_p = 1.318964e+07
n_elems = 10
[]
[pump]
type = Pump1Phase
connections = 'pipe1:out pipe2:in'
position = '1.02 0 0'
initial_p = 1.318964e+07
scaling_factor_rhoEV = 1e-5
head = ${head}
volume = ${volume}
A_ref = 0.567
initial_vel_x = 1
initial_vel_y = 1
initial_vel_z = 0
[]
[pipe2]
type = FlowChannel1Phase
position = '1.04 0 0'
orientation = '0 2 0'
length = 0.96
initial_p = 1.4072E+07
n_elems = 10
[]
[outlet]
type = Outlet1Phase
input = 'pipe2:out'
p = 1.4072E+07
[]
[]
[Preconditioning]
[pc]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'implicit-euler'
start_time = 0
dt = ${dt}
num_steps = 4
abort_on_solve_fail = true
solve_type = 'PJFNK'
line_search = 'basic'
nl_rel_tol = 1e-8
nl_abs_tol = 1e-6
nl_max_its = 15
l_tol = 1e-4
[Quadrature]
type = GAUSS
order = SECOND
[]
[]
[Postprocessors]
[pump_rhoV]
type = ScalarVariable
variable = pump:rhoV
execute_on = 'initial timestep_end'
[]
[expected_pressure_rise]
type = FunctionValuePostprocessor
function = expected_pressure_rise_fcn
execute_on = 'initial linear'
[]
[p_inlet]
type = SideAverageValue
variable = p
boundary = 'pipe1:out'
execute_on = 'initial linear'
[]
[p_outlet]
type = SideAverageValue
variable = p
boundary = 'pipe2:in'
execute_on = 'initial linear'
[]
[actual_pressure_rise]
type = DifferencePostprocessor
value1 = p_outlet
value2 = p_inlet
execute_on = 'timestep_end'
[]
[pressure_rise_diff]
type = RelativeDifferencePostprocessor
value1 = actual_pressure_rise
value2 = expected_pressure_rise
execute_on = 'timestep_end'
[]
[]
[Outputs]
[out]
type = CSV
execute_on = 'FINAL'
show = 'pressure_rise_diff'
[]
[]
(modules/thermal_hydraulics/tutorials/single_phase_flow/04_loop.i)
T_in = 300. # K
m_dot_in = 1e-4 # kg/s
press = 1e5 # Pa
# core parameters
core_length = 1. # m
core_n_elems = 10
core_dia = ${units 2. cm -> m}
core_pitch = ${units 8.7 cm -> m}
# pipe parameters
pipe_dia = ${units 10. cm -> m}
tot_power = 100 # W
[GlobalParams]
initial_p = ${press}
initial_vel = 0
initial_T = ${T_in}
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
rdg_slope_reconstruction = full
closures = simple_closures
fp = he
f = 0.4
[]
[Modules/FluidProperties]
[he]
type = IdealGasFluidProperties
molar_mass = 4e-3
gamma = 1.67
k = 0.2556
mu = 3.22639e-5
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[HeatStructureMaterials]
[steel]
type = SolidMaterialProperties
rho = 8050
k = 45
cp = 466
[]
[]
[Components]
[total_power]
type = TotalPower
power = ${tot_power}
[]
[core_chan]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
A = ${fparse core_pitch * core_pitch - pi * core_dia * core_dia / 4.}
D_h = ${core_dia}
f = 1.6
[]
[core_hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
names = 'block'
widths = '${fparse core_dia / 2.}'
materials = 'steel'
n_part_elems = 3
[]
[core_heating]
type = HeatSourceFromTotalPower
hs = core_hs
regions = block
power = total_power
[]
[core_ht]
type = HeatTransferFromHeatStructure1Phase
flow_channel = core_chan
hs = core_hs
hs_side = outer
P_hf = ${fparse pi * core_dia}
Hw = 1.36
[]
[jct1]
type = JunctionParallelChannels1Phase
position = '0 0 1'
connections = 'core_chan:out up_pipe:in'
volume = 1e-3
[]
[up_pipe]
type = FlowChannel1Phase
position = '0 0 1'
orientation = '0 0 1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct2]
type = VolumeJunction1Phase
position = '0 0 2'
connections = 'up_pipe:out top_pipe:in'
volume = 1e-3
[]
[top_pipe]
type = FlowChannel1Phase
position = '0 0 2'
orientation = '1 0 0'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct3]
type = VolumeJunction1Phase
position = '1 0 2'
connections = 'top_pipe:out cooling_pipe:in'
volume = 1e-3
[]
[cooling_pipe]
type = FlowChannel1Phase
position = '1 0 2'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[cold_wall]
type = HeatTransferFromSpecifiedTemperature1Phase
flow_channel = cooling_pipe
T_wall = 300
Hw = 0.97
[]
[jct4]
type = VolumeJunction1Phase
position = '1 0 1'
connections = 'cooling_pipe:out down_pipe:in'
volume = 1e-3
[]
[down_pipe]
type = FlowChannel1Phase
position = '1 0 1'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct5]
type = VolumeJunction1Phase
position = '1 0 0'
connections = 'down_pipe:out bottom_b:in'
volume = 1e-3
[]
[bottom_b]
type = FlowChannel1Phase
position = '1 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[pump]
type = Pump1Phase
position = '0.5 0 0'
connections = 'bottom_b:out bottom_a:in'
volume = 1e-3
A_ref = ${fparse pi * pipe_dia * pipe_dia / 4.}
head = 0
[]
[bottom_a]
type = FlowChannel1Phase
position = '0.5 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct6]
type = VolumeJunction1Phase
position = '0 0 0'
connections = 'bottom_a:out core_chan:in'
volume = 1e-3
[]
[]
[ControlLogic]
[set_point]
type = GetFunctionValueControl
function = ${m_dot_in}
[]
[pid]
type = PIDControl
initial_value = 0
set_point = set_point:value
input = m_dot_pump
K_p = 250
K_i = 0.5
K_d = 0
[]
[set_pump_head]
type = SetComponentRealValueControl
component = pump
parameter = head
value = pid:output
[]
[]
[Postprocessors]
[m_dot_pump]
type = ADFlowJunctionFlux1Phase
boundary = core_chan:in
connection_index = 1
equation = mass
junction = jct6
[]
[core_T_out]
type = SideAverageValue
boundary = core_chan:out
variable = T
[]
[hx_pri_T_out]
type = SideAverageValue
boundary = cooling_pipe:out
variable = T
[]
[]
[Executioner]
type = Transient
start_time = 0
end_time = 1000
dt = 10
line_search = basic
solve_type = NEWTON
nl_rel_tol = 1e-5
nl_abs_tol = 1e-5
nl_max_its = 5
[]
[Outputs]
exodus = true
[console]
type = Console
max_rows = 1
outlier_variable_norms = false
[]
print_linear_residuals = false
[]
(modules/thermal_hydraulics/test/tests/components/pump_1phase/pump_mass_energy_conservation.i)
# This test tests that mass and energy are conserved.
dt = 1.e-2
head = 95.
volume = 1.
A = 1.
g = 9.81
[GlobalParams]
initial_T = 393.15
initial_vel = 0
f = 0
fp = fp
scaling_factor_1phase = '0.04 0.04 0.04e-5'
closures = simple_closures
A = ${A}
[]
[Modules/FluidProperties]
[fp]
type = StiffenedGasFluidProperties
gamma = 2.35
q = -1167e3
q_prime = 0
p_inf = 1.e9
cv = 1816
[]
[]
[Closures]
[simple_closures]
type = Closures1PhaseSimple
[]
[]
[Components]
[wall_in]
type = SolidWall1Phase
input = 'pipe1:in'
[]
[pipe1]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '1 0 0'
length = 1
initial_p = 1.7E+07
n_elems = 10
gravity_vector = '0 0 0'
[]
[pump]
type = Pump1Phase
connections = 'pipe1:out pipe2:in'
position = '1.02 0 0'
initial_p = 1.3e+07
scaling_factor_rhoEV = 1e-5
head = ${head}
A_ref = ${A}
volume = ${volume}
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
[]
[pipe2]
type = FlowChannel1Phase
position = '1.04 0 0'
orientation = '1 0 0'
length = 1
initial_p = 1.3e+07
n_elems = 10
gravity_vector = '0 0 0'
[]
[wall_out]
type = SolidWall1Phase
input = 'pipe2:out'
[]
[]
[Preconditioning]
[pc]
type = SMP
full = true
[]
[]
[Executioner]
type = Transient
scheme = 'implicit-euler'
start_time = 0
dt = ${dt}
num_steps = 6
abort_on_solve_fail = true
solve_type = 'PJFNK'
line_search = 'basic'
nl_rel_tol = 1e-8
nl_abs_tol = 1e-6
nl_max_its = 15
l_tol = 1e-4
l_max_its = 10
[Quadrature]
type = GAUSS
order = SECOND
[]
[]
[Postprocessors]
# mass conservation
[mass_pipes]
type = ElementIntegralVariablePostprocessor
variable = rhoA
block = 'pipe1 pipe2'
execute_on = 'initial timestep_end'
[]
[mass_pump]
type = ScalarVariable
variable = pump:rhoV
execute_on = 'initial timestep_end'
[]
[mass_tot]
type = SumPostprocessor
values = 'mass_pipes mass_pump'
execute_on = 'initial timestep_end'
[]
[mass_tot_change]
type = ChangeOverTimePostprocessor
postprocessor = mass_tot
change_with_respect_to_initial = true
compute_relative_change = true
execute_on = 'initial timestep_end'
[]
# energy conservation
[E_pipes]
type = ElementIntegralVariablePostprocessor
variable = rhoEA
block = 'pipe1 pipe2'
execute_on = 'initial timestep_end'
[]
[E_pump]
type = ScalarVariable
variable = pump:rhoEV
execute_on = 'initial timestep_end'
[]
[E_tot]
type = LinearCombinationPostprocessor
pp_coefs = '1 1'
pp_names = 'E_pipes E_pump'
execute_on = 'initial timestep_end'
[]
[S_energy]
type = FunctionValuePostprocessor
function = S_energy_fcn
execute_on = 'initial timestep_end'
[]
[E_change]
type = ChangeOverTimePostprocessor
postprocessor = E_tot
execute_on = 'initial timestep_end'
[]
# this should also execute on initial, this value is
# lagged by one timestep as a workaround to moose issue #13262
[E_conservation]
type = FunctionValuePostprocessor
function = E_conservation_fcn
execute_on = 'timestep_end'
[]
[]
[Functions]
[S_energy_fcn]
type = ParsedFunction
value = 'rhouV * g * head * A / volume'
vars = 'rhouV g head A volume'
vals = 'pump:rhouV ${g} ${head} ${A} ${volume}'
[]
[E_conservation_fcn]
type = ParsedFunction
value = '(E_change - S_energy * dt) / E_tot'
vars = 'E_change S_energy dt E_tot'
vals = 'E_change S_energy ${dt} E_tot'
[]
[]
[Outputs]
[out]
type = CSV
execute_on = 'FINAL'
show = 'mass_tot_change E_conservation'
[]
[]
(modules/thermal_hydraulics/tutorials/single_phase_flow/06_custom_closures.i)
T_in = 300. # K
m_dot_in = 1e-4 # kg/s
press = 1e5 # Pa
# core parameters
core_length = 1. # m
core_n_elems = 10
core_dia = ${units 2. cm -> m}
core_pitch = ${units 8.7 cm -> m}
# pipe parameters
pipe_dia = ${units 10. cm -> m}
tot_power = 100 # W
# heat exchanger parameters
hx_dia_inner = ${units 10. cm -> m}
hx_wall_thickness = ${units 5. mm -> m}
hx_dia_outer = ${units 50. cm -> m}
hx_radius_wall = ${fparse hx_dia_inner / 2. + hx_wall_thickness}
hx_length = 1 # m
hx_n_elems = 10
m_dot_sec_in = 1 # kg/s
flow_blocks = 'core_chan up_pipe top_pipe hx/pri hx/sec down_pipe bottom_b bottom_a'
ht_blocks = 'core_chan hx/pri hx/sec'
[GlobalParams]
initial_p = ${press}
initial_vel = 0
initial_T = ${T_in}
initial_vel_x = 0
initial_vel_y = 0
initial_vel_z = 0
rdg_slope_reconstruction = full
closures = no_closures
fp = he
[]
[Functions]
[m_dot_sec_fn]
type = PiecewiseLinear
xy_data = '
0 0
100 ${m_dot_sec_in}'
[]
[]
[Materials]
[f_mat]
type = ADWallFrictionChurchillMaterial
block = ${flow_blocks}
D_h = D_h
f_D = f_D
mu = mu
rho = rho
vel = vel
[]
[Hw_mat]
type = ADWallHeatTransferCoefficient3EqnDittusBoelterMaterial
block = ${ht_blocks}
D_h = D_h
rho = rho
vel = vel
T = T
T_wall = T_wall
cp = cp
mu = mu
k = k
[]
[]
[Modules/FluidProperties]
[he]
type = IdealGasFluidProperties
molar_mass = 4e-3
gamma = 1.67
k = 0.2556
mu = 3.22639e-5
[]
[water]
type = StiffenedGasFluidProperties
gamma = 2.35
cv = 1816.0
q = -1.167e6
p_inf = 1.0e9
q_prime = 0
[]
[]
[Closures]
[no_closures]
type = Closures1PhaseNone
[]
[]
[HeatStructureMaterials]
[steel]
type = SolidMaterialProperties
rho = 8050
k = 45
cp = 466
[]
[]
[Components]
[total_power]
type = TotalPower
power = ${tot_power}
[]
[core_chan]
type = FlowChannel1Phase
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
A = ${fparse core_pitch * core_pitch - pi * core_dia * core_dia / 4.}
D_h = ${core_dia}
[]
[core_hs]
type = HeatStructureCylindrical
position = '0 0 0'
orientation = '0 0 1'
length = ${core_length}
n_elems = ${core_n_elems}
names = 'block'
widths = '${fparse core_dia / 2.}'
materials = 'steel'
n_part_elems = 3
[]
[core_heating]
type = HeatSourceFromTotalPower
hs = core_hs
regions = block
power = total_power
[]
[core_ht]
type = HeatTransferFromHeatStructure1Phase
flow_channel = core_chan
hs = core_hs
hs_side = outer
P_hf = ${fparse pi * core_dia}
[]
[jct1]
type = JunctionParallelChannels1Phase
position = '0 0 1'
connections = 'core_chan:out up_pipe:in'
volume = 1e-3
[]
[up_pipe]
type = FlowChannel1Phase
position = '0 0 1'
orientation = '0 0 1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct2]
type = VolumeJunction1Phase
position = '0 0 2'
connections = 'up_pipe:out top_pipe:in'
volume = 1e-3
[]
[top_pipe]
type = FlowChannel1Phase
position = '0 0 2'
orientation = '1 0 0'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct3]
type = VolumeJunction1Phase
position = '1 0 2'
connections = 'top_pipe:out hx/pri:in'
volume = 1e-3
[]
[hx]
[pri]
type = FlowChannel1Phase
position = '1 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
A = ${fparse pi * hx_dia_inner * hx_dia_inner / 4.}
D_h = ${hx_dia_inner}
[]
[ht_pri]
type = HeatTransferFromHeatStructure1Phase
hs = hx/wall
hs_side = inner
flow_channel = hx/pri
[]
[wall]
type = HeatStructureCylindrical
position = '1 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
widths = '${hx_wall_thickness}'
n_part_elems = '3'
materials = 'steel'
names = '0'
inner_radius = ${fparse hx_dia_inner / 2.}
[]
[ht_sec]
type = HeatTransferFromHeatStructure1Phase
hs = hx/wall
hs_side = outer
flow_channel = hx/sec
P_hf = ${fparse 2 * pi * hx_radius_wall}
[]
[sec]
type = FlowChannel1Phase
position = '${fparse 1 + hx_wall_thickness} 0 2'
orientation = '0 0 -1'
length = ${hx_length}
n_elems = ${hx_n_elems}
A = ${fparse pi * (hx_dia_outer * hx_dia_outer / 4. - hx_radius_wall * hx_radius_wall)}
D_h = ${fparse hx_dia_outer - (2 * hx_radius_wall)}
fp = water
[]
[]
[jct4]
type = VolumeJunction1Phase
position = '1 0 1'
connections = 'hx/pri:out down_pipe:in'
volume = 1e-3
[]
[down_pipe]
type = FlowChannel1Phase
position = '1 0 1'
orientation = '0 0 -1'
length = 1
n_elems = 10
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct5]
type = VolumeJunction1Phase
position = '1 0 0'
connections = 'down_pipe:out bottom_b:in'
volume = 1e-3
[]
[bottom_b]
type = FlowChannel1Phase
position = '1 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[pump]
type = Pump1Phase
position = '0.5 0 0'
connections = 'bottom_b:out bottom_a:in'
volume = 1e-3
A_ref = ${fparse pi * pipe_dia * pipe_dia / 4.}
head = 0
[]
[bottom_a]
type = FlowChannel1Phase
position = '0.5 0 0'
orientation = '-1 0 0'
length = 0.5
n_elems = 5
A = ${fparse pi * pipe_dia * pipe_dia / 4.}
D_h = ${pipe_dia}
[]
[jct6]
type = VolumeJunction1Phase
position = '0 0 0'
connections = 'bottom_a:out core_chan:in'
volume = 1e-3
[]
[inlet_sec]
type = InletMassFlowRateTemperature1Phase
input = 'hx/sec:out'
m_dot = 0
T = 300
[]
[outlet_sec]
type = Outlet1Phase
input = 'hx/sec:in'
p = ${press}
[]
[]
[ControlLogic]
[set_point]
type = GetFunctionValueControl
function = ${m_dot_in}
[]
[pid]
type = PIDControl
initial_value = 0
set_point = set_point:value
input = m_dot_pump
K_p = 250
K_i = 0.5
K_d = 0
[]
[set_pump_head]
type = SetComponentRealValueControl
component = pump
parameter = head
value = pid:output
[]
[m_dot_sec_inlet_ctrl]
type = GetFunctionValueControl
function = m_dot_sec_fn
[]
[set_m_dot_sec_ctrl]
type = SetComponentRealValueControl
component = inlet_sec
parameter = m_dot
value = m_dot_sec_inlet_ctrl:value
[]
[]
[Postprocessors]
[m_dot_pump]
type = ADFlowJunctionFlux1Phase
boundary = core_chan:in
connection_index = 1
equation = mass
junction = jct6
[]
[core_T_out]
type = SideAverageValue
boundary = core_chan:out
variable = T
[]
[hx_pri_T_out]
type = SideAverageValue
boundary = hx/pri:out
variable = T
[]
[hx_sec_T_in]
type = SideAverageValue
boundary = inlet_sec
variable = T
[]
[hx_sec_T_out]
type = SideAverageValue
boundary = outlet_sec
variable = T
[]
[]
[Executioner]
type = Transient
start_time = 0
[TimeStepper]
type = SolutionTimeAdaptiveDT
dt = 1
[]
dtmax = 100
end_time = 50000
line_search = basic
solve_type = NEWTON
nl_rel_tol = 1e-5
nl_abs_tol = 1e-5
nl_max_its = 5
[]
[Outputs]
exodus = true
[console]
type = Console
max_rows = 1
outlier_variable_norms = false
[]
print_linear_residuals = false
[]