Navier-Stokes Module

AuxKernels

• Navier Stokes App
• EnthalpyAux
• INSCourantComputes h_min / |u|.
• INSDivergenceAuxComputes h_min / |u|.
• INSQCriterionAuxThis class computes the Q criterion, a scalar whichaids in vortex identification in turbulent flows
• INSStressComponentAuxThis class computes the stress component based on pressure and velocity for incompressible Navier-Stokes
• InternalEnergyAux
• NSEnthalpyAuxNodal auxiliary variable, for computing enthalpy at the nodes.
• NSInternalEnergyAuxAuxiliary kernel for computing the internal energy of the fluid.
• NSMachAuxAuxiliary kernel for computing the Mach number assuming an ideal gas.
• NSPressureAuxNodal auxiliary variable, for computing pressure at the nodes.
• NSTemperatureAuxTemperature is an auxiliary value computed from the total energy based on the FluidProperties.
• NSVelocityAuxVelocity auxiliary value.
• SpecificInternalEnergyAux
• SpecificVolumeAux
• WallDistanceMixingLengthAuxComputes the turbulent mixing length by assuming that it is proportional to the distance from the nearest wall.

AuxVariables

• Navier Stokes App
• INSFVEnergyVariableBase class for Moose variables. This should never be the terminal object type
• INSFVPressureVariableBase class for Moose variables. This should never be the terminal object type
• INSFVScalarFieldVariableBase class for Moose variables. This should never be the terminal object type
• INSFVVelocityVariableBase class for Moose variables. This should never be the terminal object type
• PINSFVSuperficialVelocityVariableBase class for Moose variables. This should never be the terminal object type

BCs

• Navier Stokes App
• AdvectionBCBoundary conditions for outflow/outflow of advected quantities: phi * velocity * normal, where phi is the advected quantitiy
• EnergyFreeBCImplements free advective flow boundary conditions for the energy equation.
• INSADMomentumNoBCBCThis class implements the 'No BC' boundary condition based on the 'Laplace' form of the viscous stress tensor.
• INSMomentumNoBCBCLaplaceFormThis class implements the 'No BC' boundary condition based on the 'Laplace' form of the viscous stress tensor.
• INSMomentumNoBCBCTractionFormThis class implements the 'No BC' boundary condition based on the 'traction' form of the viscous stress tensor.
• INSTemperatureNoBCBCThis class implements the 'No BC' boundary condition discussed by Griffiths, Papanastiou, and others.
• ImplicitNeumannBCThis class implements a form of the Neumann boundary condition in which the boundary term is treated 'implicitly'.
• MassFreeBCImplements free advective flow boundary conditions for the mass equation.
• MomentumFreeBCImplements free flow boundary conditions for one of the momentum equations.
• MomentumFreeSlipBC
• NSEnergyInviscidSpecifiedBCThis class corresponds to the inviscid part of the 'natural' boundary condition for the energy equation.
• NSEnergyInviscidSpecifiedDensityAndVelocityBCThis class corresponds to the inviscid part of the 'natural' boundary condition for the energy equation.
• NSEnergyInviscidSpecifiedNormalFlowBCThis class corresponds to the inviscid part of the 'natural' boundary condition for the energy equation.
• NSEnergyInviscidSpecifiedPressureBCThis class corresponds to the inviscid part of the 'natural' boundary condition for the energy equation.
• NSEnergyInviscidUnspecifiedBCThis class corresponds to the inviscid part of the 'natural' boundary condition for the energy equation.
• NSEnergyViscousBCThis class couples together all the variables for the compressible Navier-Stokes equations to allow them to be used in derived IntegratedBC classes.
• NSEnergyWeakStagnationBCThe inviscid energy BC term with specified normal flow.
• NSImposedVelocityBCImpose Velocity BC.
• NSImposedVelocityDirectionBCThis class imposes a velocity direction component as a Dirichlet condition on the appropriate momentum equation.
• NSInflowThermalBCThis class is used on a boundary where the incoming flow values (rho, u, v, T) are all completely specified.
• NSMassSpecifiedNormalFlowBCThis class implements the mass equation boundary term with a specified value of rho*(u.n) imposed weakly.
• NSMassUnspecifiedNormalFlowBCThis class implements the mass equation boundary term with the rho*(u.n) boundary integral computed implicitly.
• NSMassWeakStagnationBCThe inviscid energy BC term with specified normal flow.
• NSMomentumConvectiveWeakStagnationBCThe convective part (sans pressure term) of the momentum equation boundary integral evaluated at specified stagnation temperature, stagnation pressure, and flow direction values.
• NSMomentumInviscidNoPressureImplicitFlowBCMomentum equation boundary condition used when pressure is not integrated by parts.
• NSMomentumInviscidSpecifiedNormalFlowBCMomentum equation boundary condition in which pressure is specified (given) and the value of the convective part is allowed to vary (is computed implicitly).
• NSMomentumInviscidSpecifiedPressureBCMomentum equation boundary condition in which pressure is specified (given) and the value of the convective part is allowed to vary (is computed implicitly).
• NSMomentumPressureWeakStagnationBCThis class implements the pressure term of the momentum equation boundary integral for use in weak stagnation boundary conditions.
• NSMomentumViscousBCThis class corresponds to the viscous part of the 'natural' boundary condition for the momentum equations.
• NSPenalizedNormalFlowBCThis class penalizes the the value of u.n on the boundary so that it matches some desired value.
• NSPressureNeumannBCThis kernel is appropriate for use with a 'zero normal flow' boundary condition in the context of the Euler equations.
• NSStagnationPressureBCThis Dirichlet condition imposes the condition p_0 = p_0_desired.
• NSStagnationTemperatureBCThis Dirichlet condition imposes the condition T_0 = T_0_desired.
• NSThermalBCNS thermal BC.

Bounds

FVBCs

• Navier Stokes App
• INSFVInletVelocityBCImposes the essential boundary condition , where is a (possibly) time and space-dependent MOOSE Function.
• INSFVMassAdvectionOutflowBCOutflow boundary condition for advecting mass.
• INSFVMomentumAdvectionOutflowBCOutflow boundary condition for advecting momentum. This will impose a zero normal gradient on the boundary velocity.
• INSFVNaturalFreeSlipBCImplements a free slip boundary condition naturally.
• INSFVNoSlipWallBCImplements a no slip boundary condition.
• INSFVOutletPressureBCImposes the essential boundary condition , where is a (possibly) time and space-dependent MOOSE Function.
• INSFVSymmetryPressureBCThough applied to the pressure, this object ensures that the velocity perpendicular to a symmetry bounadry is zero by setting the mass flow rate across the symmetry boundary to zero.
• INSFVSymmetryVelocityBCImplements a free slip boundary condition using a penalty formulation.
• PINSFVMomentumAdvectionOutflowBCOutflow boundary condition for advecting momentum. This will impose a zero normal gradient on the boundary velocity.
• PINSFVSymmetryVelocityBCImplements a free slip boundary condition using a penalty formulation.

FVKernels

• Navier Stokes App
• INSFVEnergyAdvectionAdvects energy, e.g. rho*cp*T. A user may still override what quantity is advected, but the default is rho*cp*T
• INSFVEnergyTimeDerivativeAdds the time derivative term to the incompressible Navier-Stokes energy equation.
• INSFVMassAdvectionObject for advecting mass, e.g. rho
• INSFVMixingLengthReynoldsStressComputes the force due to the Reynolds stress term in the incompressible Reynolds-averaged Navier-Stokes equations.
• INSFVMixingLengthScalarDiffusionComputes the turbulent diffusive flux that appears in Reynolds-averaged fluid conservation equations.
• INSFVMomentumAdvectionObject for advecting momentum, e.g. rho*u
• INSFVMomentumBoussinesqComputes a body force for natural convection buoyancy.
• INSFVMomentumGravityComputes a body force due to gravity.
• INSFVMomentumPressureIntroduces the coupled pressure term into the Navier-Stokes momentum equation.
• INSFVMomentumTimeDerivativeAdds the time derivative term to the incompressible Navier-Stokes momentum equation.
• INSFVScalarFieldAdvectionAdvects an arbitrary quantity. If the 'advected_quantity' parameter is specified, it will be used. Else the default is to advect the associated nonlinear 'variable'.
• NSFVEnergyAmbientConvectionImplements a solid-fluid ambient convection volumetric term proportional to the difference between the fluid and ambient temperatures : .
• NSFVMomentumFrictionImplements a basic linear or quadratic friction model as a volumetric force, for example for the X-momentum equation: and for the linear and quadratic models respectively. A linear dependence is expected for laminar flow, while a quadratic dependence is more common for turbulent flow.
• PINSFVEnergyAdvectionAdvects energy, e.g. rho*cp*T. A user may still override what quantity is advected, but the default is rho*cp*T
• PINSFVEnergyAmbientConvectionImplements the solid-fluid ambient convection term in the porous media Navier Stokes energy equation.
• PINSFVEnergyDiffusionDiffusion term in the porous media incompressible Navier-Stokes fluid energy equations :
• PINSFVEnergyEffectiveDiffusionEffective diffusion term in the porous media incompressible Navier-Stokes equations : $-div(kappa grad(T))
• PINSFVEnergyTimeDerivativeAdds the time derivative term to the incompressible Navier-Stokes energy equation: for fluids: eps * rho * cp * dT/dt, for solids: (1 - eps) * rho * cp * dT/dt
• PINSFVMassAdvectionObject for advecting mass in porous media mass equation
• PINSFVMomentumAdvectionObject for advecting superficial momentum, e.g. rho*u_d, in the porous media momentum equation
• PINSFVMomentumAdvectionPorosityGradientPorosity gradient spun from the advection term for the porous media Navier Stokes momentum equation.
• PINSFVMomentumBoussinesqComputes a body force for natural convection buoyancy in porous media: eps alpha (T-T_0)
• PINSFVMomentumDiffusionViscous diffusion term, div(mu grad(u_d / eps)), in the porous media incompressible Navier-Stokes momentum equation.
• PINSFVMomentumFrictionComputes a friction force term on fluid in porous media in the Navier Stokes i-th momentum equation.
• PINSFVMomentumGravityComputes a body force, due to gravity on fluid in porous media.
• PINSFVMomentumPressureIntroduces the coupled pressure term into the Navier-Stokes porous media momentum equation.
• PINSFVMomentumPressureFluxMomentum pressure term eps grad_P, as a flux kernel using the divergence theoreom, in the porous media incompressible Navier-Stokes momentum equation. This kernel is also executed on boundaries.
• PINSFVMomentumPressurePorosityGradientIntroduces the coupled pressure times porosity gradient term into the Navier-Stokes porous media momentum equation.
• PINSFVMomentumTimeDerivativeAdds the time derivative term: d(rho u_d) / dt to the porous media incompressible Navier-Stokes momentum equation.

ICs

• Navier Stokes App
• NSInitialConditionNSInitialCondition sets intial constant values for all variables.

Kernels

• Navier Stokes App
• DistributedForceImplements a force term in the Navier Stokes momentum equation.
• DistributedPowerImplements the power term of a specified force in the Navier Stokes energy equation.
• INSADBoussinesqBodyForceComputes a body force for natural convection buoyancy.
• INSADEnergyAdvectionThis class computes the residual and Jacobian contributions for temperature advection for a divergence free velocity field.
• INSADEnergyAmbientConvectionComputes a heat source/sink due to convection from ambient surroundings.
• INSADEnergySUPGAdds the supg stabilization to the INS temperature/energy equation
• INSADEnergySourceComputes an arbitrary volumetric heat source (or sink).
• INSADGravityForceComputes a body force due to gravity.
• INSADHeatConductionTimeDerivativeAD Time derivative term of the heat equation for quasi-constant specific heat and the density .
• INSADMassThis class computes the mass equation residual and Jacobian contributions (the latter using automatic differentiation) for the incompressible Navier-Stokes equations.
• INSADMassPSPGThis class adds PSPG stabilization to the mass equation, enabling use of equal order shape functions for pressure and velocity variables
• INSADMomentumAdvectionAdds the advective term to the INS momentum equation
• INSADMomentumCoupledForceComputes a body force due to a coupled vector variable or a vector function
• INSADMomentumPressureAdds the pressure term to the INS momentum equation
• INSADMomentumSUPGAdds the supg stabilization to the INS momentum equation
• INSADMomentumTimeDerivativeThis class computes the time derivative for the incompressible Navier-Stokes momentum equation.
• INSADMomentumViscousAdds the viscous term to the INS momentum equation
• INSADSmagorinskyEddyViscosityComputes eddy viscosity term using Smagorinky's LES model
• INSChorinCorrectorThis class computes the 'Chorin' Corrector equation in fully-discrete (both time and space) form.
• INSChorinPredictorThis class computes the 'Chorin' Predictor equation in fully-discrete (both time and space) form.
• INSChorinPressurePoissonThis class computes the pressure Poisson solve which is part of the 'split' scheme used for solving the incompressible Navier-Stokes equations.
• INSCompressibilityPenaltyThe penalty term may be used when Dirichlet boundary condition is applied to the entire boundary.
• INSMassThis class computes the mass equation residual and Jacobian contributions for the incompressible Navier-Stokes momentum equation.
• INSMassRZThis class computes the mass equation residual and Jacobian contributions for the incompressible Navier-Stokes momentum equation in RZ coordinates.
• INSMomentumLaplaceFormThis class computes momentum equation residual and Jacobian viscous contributions for the 'Laplacian' form of the governing equations.
• INSMomentumLaplaceFormRZThis class computes additional momentum equation residual and Jacobian contributions for the incompressible Navier-Stokes momentum equation in RZ (axisymmetric cylindrical) coordinates, using the 'Laplace' form of the governing equations.
• INSMomentumTimeDerivativeThis class computes the time derivative for the incompressible Navier-Stokes momentum equation.
• INSMomentumTractionFormThis class computes momentum equation residual and Jacobian viscous contributions for the 'traction' form of the governing equations.
• INSMomentumTractionFormRZThis class computes additional momentum equation residual and Jacobian contributions for the incompressible Navier-Stokes momentum equation in RZ (axisymmetric cylindrical) coordinates.
• INSPressurePoissonThis class computes the pressure Poisson solve which is part of the 'split' scheme used for solving the incompressible Navier-Stokes equations.
• INSProjectionThis class computes the 'projection' part of the 'split' method for solving incompressible Navier-Stokes.
• INSSplitMomentumThis class computes the 'split' momentum equation residual.
• INSTemperatureThis class computes the residual and Jacobian contributions for the incompressible Navier-Stokes temperature (energy) equation.
• INSTemperatureTimeDerivativeThis class computes the time derivative for the incompressible Navier-Stokes momentum equation.
• MassConvectiveFluxImplements the advection term for the Navier Stokes mass equation.
• MomentumConvectiveFluxImplements the advective term of the Navier Stokes momentum equation.
• NSEnergyInviscidFluxThis class computes the inviscid part of the energy flux.
• NSEnergyThermalFluxThis class is responsible for computing residuals and Jacobian terms for the k * grad(T) * grad(phi) term in the Navier-Stokes energy equation.
• NSEnergyViscousFluxViscous flux terms in energy equation.
• NSGravityForceThis class computes the gravity force contribution.
• NSGravityPowerThis class computes the momentum contributed by gravity.
• NSMassInviscidFluxThis class computes the inviscid flux in the mass equation.
• NSMomentumInviscidFluxThe inviscid flux (convective + pressure terms) for the momentum conservation equations.
• NSMomentumInviscidFluxWithGradPThis class computes the inviscid flux with pressure gradient in the momentum equation.
• NSMomentumViscousFluxDerived instance of the NSViscousFluxBase class for the momentum equations.
• NSSUPGEnergyCompute residual and Jacobian terms form the SUPG terms in the energy equation.
• NSSUPGMassCompute residual and Jacobian terms form the SUPG terms in the mass equation.
• NSSUPGMomentumCompute residual and Jacobian terms form the SUPG terms in the momentum equation.
• NSTemperatureL2This class was originally used to solve for the temperature using an L2-projection.
• PressureGradientImplements the pressure gradient term for one of the Navier Stokes momentum equations.
• TotalEnergyConvectiveFluxImplements the advection term for the Navier Stokes energy equation.

Materials

• Navier Stokes App
• AirAir.
• INSAD3EqnThis material computes properties needed for stabilized formulations of the mass, momentum, and energy equations.
• INSADMaterialThis is the material class used to compute some of the strong residuals for the INS equations.
• INSADStabilized3EqnThis is the material class used to compute the stabilization parameter tau for momentum and tau_energy for the energy equation.
• INSADTauMaterialThis is the material class used to compute the stabilization parameter tau.
• INSFVMaterialThis is the material class used to compute advected quantities for the finite-volume implementation of the Navier-Stokes equations.

Modules

• Navier Stokes App
• CompressibleNavierStokes
• IncompressibleNavierStokes

Postprocessors

• Navier Stokes App
• INSExplicitTimestepSelectorPostprocessor that computes the minimum value of h_min/|u|, where |u| is coupled in as an aux variable.
• InternalVolumetricFlowRateComputes the volumetric flow rate of an advected quantity through an internal boundary.
• NSEntropyErrorComputes entropy error.
• VolumetricFlowRateComputes the volumetric flow rate of an advected quantity through an external boundary.

UserObjects

• Navier Stokes App
• INSADObjectTrackerUser object used to track the kernels added to an INS simulation and determine what properties to calculate in INSADMaterial

Variables

• Navier Stokes App
• INSFVEnergyVariableBase class for Moose variables. This should never be the terminal object type
• INSFVPressureVariableBase class for Moose variables. This should never be the terminal object type
• INSFVScalarFieldVariableBase class for Moose variables. This should never be the terminal object type
• INSFVVelocityVariableBase class for Moose variables. This should never be the terminal object type
• PINSFVSuperficialVelocityVariableBase class for Moose variables. This should never be the terminal object type