SubChannel Failure Analysis Report

Introduction

The FAR for the SubChannel module describes the system functional and non-functional requirements that describe the expected interactions that the software shall provide.

Dependencies

The SubChannel module is developed using MOOSE and can itself be based on various MOOSE modules, as such the FAR for the SubChannel module is dependent upon the following documents.

Failure Analysis Requirements

The following is a complete list for all the requirements related to failure analysis for the SubChannel module.

subchannel: Mesh
21.6.2The system shall check the minimum number of subchannels for detailed quadrilateral assemblies
Specification(s): subchannel_number
Design: SCMDetailedQuadAssemblyMeshGenerator
Issue(s): #32796
Collection(s): FUNCTIONALFAILURE_ANALYSIS
Type(s): RunException
21.6.8The system shall check the minimum number of subchannels
Specification(s): subchannel_number
Design: SCMQuadAssemblyMeshGenerator
Issue(s): #29224
Collection(s): FUNCTIONALFAILURE_ANALYSIS
Type(s): RunException

subchannel: Postprocessors
21.10.2The system will test the user provided height
Specification(s): subchannel_height
Design: SubChannelPointValue
Issue(s): #29226 #29486
Collection(s): FUNCTIONALFAILURE_ANALYSIS
Type(s): RunException

subchannel: Problems
21.11.6The system shall reject monolithic relaxation controls when using a segregated solve.
Specification(s): invalid_segregated_relaxation
Design: TriSubChannel1PhaseProblem
Issue(s): #29194 #29490 #29505
Collection(s): FUNCTIONALFAILURE_ANALYSIS
Type(s): RunException
21.11.7The system shall reject a non-segregated solve when implicit assembly is disabled.
Specification(s): invalid_explicit_nonsegregated
Design: TriSubChannel1PhaseProblem
Issue(s): #29194 #29490 #29505
Collection(s): FUNCTIONALFAILURE_ANALYSIS
Type(s): RunException
21.11.15
The system shall be able to model the EBR-II steady state SHRT-17 case,
1. using the default Dittus Boelter correlation for circular tubes.
2. using the Dittus Boelter correlation and the Presser correction factor.
3. using the Dittus Boelter correlation and the Weisman correction factor.
4. using the Gnielinski correlation.
5. and reject non-physical heat transfer coefficients from HTC closures.
6. using the Kazimi-Carelli correlation.
7. using the Schad-Modified correlation.
8. using the Graber-Rieger correlation.
9. using the Borishanskii correlation.
Specification(s): EBR-II_SHRT-17_SS/dittus_boelter, EBR-II_SHRT-17_SS/dittus_boelter_Presser, EBR-II_SHRT-17_SS/dittus_boelter_Weisman, EBR-II_SHRT-17_SS/gnielinski, EBR-II_SHRT-17_SS/negative_htc_error, EBR-II_SHRT-17_SS/kazimi_carelli, EBR-II_SHRT-17_SS/schad_modified, EBR-II_SHRT-17_SS/graber_rieger, EBR-II_SHRT-17_SS/borishanskii
Design: QuadSubChannel1PhaseProblem TriSubChannel1PhaseProblem SCMHTCClosureBase
Issue(s): #31464 #32889
Collection(s): FUNCTIONALFAILURE_ANALYSIS
Type(s): RunExceptionCSVDiff

subchannel: Scmclosures
21.13.1The updated Cheng-Todreas friction closure shall reject a corner-subchannel wire correction outside the mathematical domain of the correlation.
Specification(s): invalid_corner_wire_correction
Design: SCMFrictionUpdatedChengTodreas
Issue(s): #33441
Collection(s): FUNCTIONALFAILURE_ANALYSIS
Type(s): RunException

subchannel: Transfers
21.14.2The system shall report an error when a variable is transferred with the wrong subchannel transfer type
Specification(s): wrong_transfer_type
Design: SCMSolutionTransfer
Issue(s): #29251
Collection(s): FUNCTIONALFAILURE_ANALYSIS
Type(s): RunException


[subchannel_number]
  type = 'RunException'
  input = 'coords.i'
  cli_args = 'Mesh/assembly/nx=1 Mesh/assembly/ny=1'
  expect_err = "The number of subchannels cannot be less than 2 in both directions\. Smallest assembly allowed is either 2X1 or 1X2\."
  requirement = 'The system shall check the minimum number of subchannels for detailed quadrilateral assemblies'
[]


[subchannel_number]
  type = 'RunException'
  input = 'subchannel_number.i'
  expect_err = "The number of subchannels cannot be less than 2 in both directions\. Smallest assembly allowed is either 2X1 or 1X2\."
  issues = '#29224'
  requirement = 'The system shall check the minimum number of subchannels'
[]


[invalid_segregated_relaxation]
  type = RunException
  input = test19_implicit.i
  cli_args = 'SubChannel/mass_flow_relaxation=0.5 Outputs/exodus=false Outputs/csv=false'
  expect_err = "The 'mass_flow_relaxation' parameter is only used by the implicit non-segregated solve\."
  requirement = 'The system shall reject monolithic relaxation controls when using a segregated solve.'
[]


[invalid_explicit_nonsegregated]
  type = RunException
  input = test19_explicit.i
  cli_args = 'SubChannel/segregated=false Outputs/exodus=false Outputs/csv=false'
  expect_err = "A non-segregated solve requires 'implicit = true'\."
  requirement = 'The system shall reject a non-segregated solve when implicit assembly is disabled.'
[]


[dittus_boelter]
  type = CSVDiff
  input = 'XX09_SCM_SS17.i'
  allow_test_objects = true
  csvdiff = 'dittus_boelter.csv'
  capabilities = 'method!=dbg'
  abs_zero = 1e-5
  valgrind = NONE
  recover = false
  max_parallel = 1
  detail = 'using the default Dittus Boelter correlation for circular tubes.'
  cli_args = 'SubChannel/pin_HTC_closure=dittus-boelter SubChannel/duct_HTC_closure=dittus-boelter Outputs/file_base=dittus_boelter FluidProperties/sodium/type=Water97FluidProperties SCMClosures/dittus-boelter/correction_factor=none T_in=300.0'
[]


[dittus_boelter_Presser]
  type = CSVDiff
  input = 'XX09_SCM_SS17.i'
  allow_test_objects = true
  csvdiff = 'dittus_boelter_Presser.csv'
  capabilities = 'method!=dbg'
  abs_zero = 1e-5
  valgrind = NONE
  recover = false
  max_parallel = 1
  detail = 'using the Dittus Boelter correlation and the Presser correction factor.'
  cli_args = 'SubChannel/pin_HTC_closure=dittus-boelter SubChannel/duct_HTC_closure=dittus-boelter Outputs/file_base=dittus_boelter_Presser FluidProperties/sodium/type=Water97FluidProperties SCMClosures/dittus-boelter/correction_factor=Presser T_in=300.0'
[]


[dittus_boelter_Weisman]
  type = CSVDiff
  input = 'XX09_SCM_SS17.i'
  allow_test_objects = true
  csvdiff = 'dittus_boelter_Weisman.csv'
  capabilities = 'method!=dbg'
  abs_zero = 1e-5
  valgrind = NONE
  recover = false
  max_parallel = 1
  detail = 'using the Dittus Boelter correlation and the Weisman correction factor.'
  cli_args = 'SubChannel/pin_HTC_closure=dittus-boelter SubChannel/duct_HTC_closure=dittus-boelter Outputs/file_base=dittus_boelter_Weisman FluidProperties/sodium/type=Water97FluidProperties SCMClosures/dittus-boelter/correction_factor=Weisman T_in=300.0'
[]


[gnielinski]
  type = CSVDiff
  input = 'XX09_SCM_SS17.i'
  allow_test_objects = true
  csvdiff = 'gnielinski.csv'
  capabilities = 'method!=dbg'
  abs_zero = 1e-5
  valgrind = NONE
  recover = false
  max_parallel = 1
  detail = 'using the Gnielinski correlation.'
  cli_args = 'SubChannel/pin_HTC_closure=gnielinski SubChannel/duct_HTC_closure=gnielinski Outputs/file_base=gnielinski'
[]


[negative_htc_error]
  type = RunException
  input = 'XX09_SCM_SS17.i'
  allow_test_objects = true
  expect_err = 'The heat transfer coefficient must be non-negative and finite\.'
  capabilities = 'method!=dbg'
  valgrind = NONE
  recover = false
  max_parallel = 1
  detail = 'and reject non-physical heat transfer coefficients from HTC closures.'
  cli_args = 'SubChannel/pin_HTC_closure=negative-htc SubChannel/duct_HTC_closure=negative-htc Outputs/file_base=negative_htc_error'
[]


[kazimi_carelli]
  type = CSVDiff
  input = 'XX09_SCM_SS17.i'
  allow_test_objects = true
  csvdiff = 'kazimi-carelli.csv'
  capabilities = 'method!=dbg'
  abs_zero = 1e-5
  valgrind = NONE
  recover = false
  max_parallel = 1
  detail = 'using the Kazimi-Carelli correlation.'
  cli_args = 'SubChannel/pin_HTC_closure=kazimi-carelli SubChannel/duct_HTC_closure=gnielinski Outputs/file_base=kazimi-carelli'
[]


[schad_modified]
  type = CSVDiff
  input = 'XX09_SCM_SS17.i'
  allow_test_objects = true
  csvdiff = 'schad-modified.csv'
  capabilities = 'method!=dbg'
  abs_zero = 1e-5
  valgrind = NONE
  recover = false
  max_parallel = 1
  detail = 'using the Schad-Modified correlation.'
  cli_args = 'SubChannel/pin_HTC_closure=schad-modified SubChannel/duct_HTC_closure=gnielinski Outputs/file_base=schad-modified'
[]


[graber_rieger]
  type = CSVDiff
  input = 'XX09_SCM_SS17.i'
  allow_test_objects = true
  csvdiff = 'graber-rieger.csv'
  capabilities = 'method!=dbg'
  abs_zero = 1e-5
  valgrind = NONE
  recover = false
  max_parallel = 1
  detail = 'using the Graber-Rieger correlation.'
  cli_args = 'SubChannel/pin_HTC_closure=graber-rieger SubChannel/duct_HTC_closure=gnielinski Outputs/file_base=graber-rieger'
[]


[borishanskii]
  type = CSVDiff
  input = 'XX09_SCM_SS17.i'
  allow_test_objects = true
  csvdiff = 'borishanskii.csv'
  capabilities = 'method!=dbg'
  abs_zero = 1e-5
  valgrind = NONE
  recover = false
  max_parallel = 1
  detail = 'using the Borishanskii correlation.'
  cli_args = 'SubChannel/pin_HTC_closure=borishanskii SubChannel/duct_HTC_closure=gnielinski Outputs/file_base=borishanskii'
[]


[invalid_corner_wire_correction]
  type = RunException
  input = invalid_corner_wire_correction.i
  expect_err = 'The exponentiated term in the Cheng-Todreas turbulent wire correction must be non-negative and finite for a corner subchannel\.'
  capabilities = 'method!=dbg'
  valgrind = NONE
  recover = false
  max_parallel = 1
  requirement = 'The updated Cheng-Todreas friction closure shall reject a corner-subchannel wire correction outside the mathematical domain of the correlation.'
[]


[wrong_transfer_type]
  type = RunException
  input = 'quad.i'
  cli_args = "Transfers/T_transfer/transfer_type=subchannel Outputs/file_base=wrong_transfer_type"
  expect_err = "The variable 'T' does not have DOFs on subchannel nodes"
  requirement = 'The system shall report an error when a variable is transferred with the wrong subchannel transfer type'
[]

Introduction
Dependencies
Failure Analysis Requirements