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September 3, 2018, 12:19 |
rhoSimpleFoam time step continuity errors
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#1 |
Senior Member
Deep
Join Date: Oct 2017
Posts: 180
Rep Power: 9 |
Hello,
I'm trying to solve a 2 streams mixing problem for a particular geometry. SO I have 2 inlets and one outlet and the mesh is completely structured for the rectangular geometry. I am getting time step continuity errors as shown below. Code:
Create time Create mesh for time = 0 SIMPLE: convergence criteria field p tolerance 0.01 field U tolerance 0.0001 field e tolerance 0.001 field "(k|epsilon|omega)" tolerance 0.001 Reading thermophysical properties Selecting thermodynamics package { type hePsiThermo; mixture pureMixture; transport sutherland; thermo hConst; equationOfState perfectGas; specie specie; energy sensibleInternalEnergy; } Reading field U Reading/calculating face flux field phi pressureControl pMax 165000 pMin 40494 Creating turbulence model Selecting turbulence model type laminar Selecting laminar stress model Stokes No MRF models present No finite volume options present Starting time loop Time = 1 smoothSolver: Solving for Ux, Initial residual = 1, Final residual = 0.0628401, No Iterations 2 smoothSolver: Solving for Uy, Initial residual = 1, Final residual = 0.0397387, No Iterations 2 smoothSolver: Solving for Uz, Initial residual = 0.999999, Final residual = 0.0163076, No Iterations 4 smoothSolver: Solving for e, Initial residual = 1, Final residual = 0.0169938, No Iterations 1 GAMG: Solving for p, Initial residual = 1, Final residual = 0.0314266, No Iterations 2 time step continuity errors : sum local = 4744.53, global = -3840.24, cumulative = -3840.24 ExecutionTime = 3.93 s ClockTime = 4 s Time = 2 smoothSolver: Solving for Ux, Initial residual = 0.112653, Final residual = 0.00870741, No Iterations 4 smoothSolver: Solving for Uy, Initial residual = 0.663654, Final residual = 0.011927, No Iterations 2 smoothSolver: Solving for Uz, Initial residual = 0.169241, Final residual = 0.0155358, No Iterations 4 smoothSolver: Solving for e, Initial residual = 0.807748, Final residual = 0.00160731, No Iterations 1 GAMG: Solving for p, Initial residual = 0.978126, Final residual = 0.0452374, No Iterations 6 time step continuity errors : sum local = 1138.37, global = -218.941, cumulative = -4059.18 pressureControl: p max 275246 ExecutionTime = 7.25 s ClockTime = 8 s Time = 3 smoothSolver: Solving for Ux, Initial residual = 0.152194, Final residual = 0.00842596, No Iterations 4 smoothSolver: Solving for Uy, Initial residual = 0.5878, Final residual = 0.0443492, No Iterations 2 smoothSolver: Solving for Uz, Initial residual = 0.0984365, Final residual = 0.0096684, No Iterations 4 smoothSolver: Solving for e, Initial residual = 0.313931, Final residual = 0.00362717, No Iterations 1 [mae-hen-8163-db:22471] *** Process received signal *** [mae-hen-8163-db:22471] Signal: Floating point exception (8) [mae-hen-8163-db:22471] Signal code: (-6) [mae-hen-8163-db:22471] Failing at address: 0x3e9000057c7 [mae-hen-8163-db:22468] *** Process received signal *** [mae-hen-8163-db:22468] Signal: Floating point exception (8) [mae-hen-8163-db:22468] Signal code: (-6) [mae-hen-8163-db:22468] Failing at address: 0x3e9000057c4 [mae-hen-8163-db:22468] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7fea736c4f20] [mae-hen-8163-db:22468] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7fea736c4e97] [mae-hen-8163-db:22468] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7fea736c4f20] [mae-hen-8163-db:22468] [ 3] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE9calculateEv+0x305)[0x7fea7919b825] [mae-hen-8163-db:22468] [ 4] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE7correctEv+0x2a)[0x7fea791ad87a] [mae-hen-8163-db:22468] [ 5] rhoSimpleFoam(+0x2ae46)[0x55ae34731e46] [mae-hen-8163-db:22468] [ 6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7fea736a7b97] [mae-hen-8163-db:22468] [ 7] rhoSimpleFoam(+0x2f96a)[0x55ae3473696a] [mae-hen-8163-db:22468] *** End of error message *** [mae-hen-8163-db:22471] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f76cdac4f20] [mae-hen-8163-db:22471] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7f76cdac4e97] [mae-hen-8163-db:22471] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f76cdac4f20] [mae-hen-8163-db:22471] [ 3] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE9calculateEv+0x305)[0x7f76d359b825] [mae-hen-8163-db:22471] [ 4] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE7correctEv+0x2a)[0x7f76d35ad87a] [mae-hen-8163-db:22471] [ 5] rhoSimpleFoam(+0x2ae46)[0x5580f29cae46] [mae-hen-8163-db:22471] [ 6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f76cdaa7b97] [mae-hen-8163-db:22471] [ 7] rhoSimpleFoam(+0x2f96a)[0x5580f29cf96a] [mae-hen-8163-db:22471] *** End of error message *** [mae-hen-8163-db:22470] *** Process received signal *** [mae-hen-8163-db:22470] Signal: Floating point exception (8) [mae-hen-8163-db:22470] Signal code: (-6) [mae-hen-8163-db:22470] Failing at address: 0x3e9000057c6 [mae-hen-8163-db:22470] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7fd153bc5f20] [mae-hen-8163-db:22470] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7fd153bc5e97] [mae-hen-8163-db:22470] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7fd153bc5f20] [mae-hen-8163-db:22470] [ 3] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE9calculateEv+0x305)[0x7fd15969c825] [mae-hen-8163-db:22470] [ 4] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE7correctEv+0x2a)[0x7fd1596ae87a] [mae-hen-8163-db:22470] [ 5] rhoSimpleFoam(+0x2ae46)[0x5569ee4d0e46] [mae-hen-8163-db:22470] [ 6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7fd153ba8b97] [mae-hen-8163-db:22470] [ 7] rhoSimpleFoam(+0x2f96a)[0x5569ee4d596a] [mae-hen-8163-db:22470] *** End of error message *** [mae-hen-8163-db:22469] *** Process received signal *** [mae-hen-8163-db:22469] Signal: Floating point exception (8) [mae-hen-8163-db:22469] Signal code: (-6) [mae-hen-8163-db:22469] Failing at address: 0x3e9000057c5 [mae-hen-8163-db:22469] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f09068fcf20] [mae-hen-8163-db:22469] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7f09068fce97] [mae-hen-8163-db:22469] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f09068fcf20] [mae-hen-8163-db:22469] [ 3] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE9calculateEv+0x305)[0x7f090c3d3825] [mae-hen-8163-db:22469] [ 4] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE7correctEv+0x2a)[0x7f090c3e587a] [mae-hen-8163-db:22469] [ 5] rhoSimpleFoam(+0x2ae46)[0x55a1f26bee46] [mae-hen-8163-db:22469] [ 6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f09068dfb97] [mae-hen-8163-db:22469] [ 7] rhoSimpleFoam(+0x2f96a)[0x55a1f26c396a] [mae-hen-8163-db:22469] *** End of error message *** -------------------------------------------------------------------------- mpirun noticed that process rank 0 with PID 0 on node mae-hen-8163-db exited on signal 8 (Floating point exception). -------------------------------------------------------------------------- Code:
time step continuity errors : sum local = 1138.37, global = -218.941, cumulative = -4059.18 pressureControl: p max 275246 Code:
pressureControl pMax 165000 pMin 40494 New errors do not include the pMax warning line but solver fails nonetheless: Code:
Create time Create mesh for time = 0 SIMPLE: convergence criteria field p tolerance 0.01 field U tolerance 0.0001 field e tolerance 0.001 field "(k|epsilon|omega)" tolerance 0.001 Reading thermophysical properties Selecting thermodynamics package { type hePsiThermo; mixture pureMixture; transport sutherland; thermo hConst; equationOfState perfectGas; specie specie; energy sensibleInternalEnergy; } Reading field U Reading/calculating face flux field phi pressureControl pMax 385000 pMin 40494 Creating turbulence model Selecting turbulence model type laminar Selecting laminar stress model Stokes No MRF models present No finite volume options present Starting time loop Time = 1 smoothSolver: Solving for Ux, Initial residual = 1, Final residual = 0.0628742, No Iterations 2 smoothSolver: Solving for Uy, Initial residual = 1, Final residual = 0.0397387, No Iterations 2 smoothSolver: Solving for Uz, Initial residual = 0.999999, Final residual = 0.0163076, No Iterations 4 smoothSolver: Solving for e, Initial residual = 1, Final residual = 0.0169938, No Iterations 1 GAMG: Solving for p, Initial residual = 1, Final residual = 0.0314271, No Iterations 2 time step continuity errors : sum local = 4744.6, global = -3840.21, cumulative = -3840.21 ExecutionTime = 4.31 s ClockTime = 4 s Time = 2 smoothSolver: Solving for Ux, Initial residual = 0.112656, Final residual = 0.00870786, No Iterations 4 smoothSolver: Solving for Uy, Initial residual = 0.663654, Final residual = 0.0119271, No Iterations 2 smoothSolver: Solving for Uz, Initial residual = 0.169241, Final residual = 0.015536, No Iterations 4 smoothSolver: Solving for e, Initial residual = 0.807748, Final residual = 0.0016073, No Iterations 1 GAMG: Solving for p, Initial residual = 0.978126, Final residual = 0.0452372, No Iterations 6 time step continuity errors : sum local = 1138.36, global = -218.941, cumulative = -4059.15 ExecutionTime = 7.28 s ClockTime = 7 s Time = 3 smoothSolver: Solving for Ux, Initial residual = 0.280108, Final residual = 0.0257687, No Iterations 4 smoothSolver: Solving for Uy, Initial residual = 0.805069, Final residual = 0.0705581, No Iterations 4 smoothSolver: Solving for Uz, Initial residual = 0.473923, Final residual = 0.0284756, No Iterations 6 smoothSolver: Solving for e, Initial residual = 0.528692, Final residual = 0.00947931, No Iterations 1 [mae-hen-8163-db:24641] *** Process received signal *** [mae-hen-8163-db:24641] Signal: Floating point exception (8) [mae-hen-8163-db:24641] Signal code: (-6) [mae-hen-8163-db:24641] Failing at address: 0x3e900006041 [mae-hen-8163-db:24641] [mae-hen-8163-db:24639] *** Process received signal *** [mae-hen-8163-db:24639] Signal: Floating point exception (8) [mae-hen-8163-db:24639] Signal code: (-6) [mae-hen-8163-db:24639] Failing at address: 0x3e90000603f [mae-hen-8163-db:24639] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f0e3850af20] [mae-hen-8163-db:24639] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7f0e3850ae97] [mae-hen-8163-db:24639] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f0e3850af20] [mae-hen-8163-db:24639] [ 3] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE9calculateEv+0x305)[0x7f0e3dfe1825] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7fa802966f20] [mae-hen-8163-db:24641] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7fa802966e97] [mae-hen-8163-db:24641] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7fa802966f20] [mae-hen-8163-db:24641] [ 3] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE9calculateEv+0x305)[0x7fa80843d825] [mae-hen-8163-db:24641] [ 4] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE7correctEv+0x2a)[0x7fa80844f87a] [mae-hen-8163-db:24641] [ 5] rhoSimpleFoam(+0x2ae46)[0x559c59b77e46] [mae-hen-8163-db:24641] [ 6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7fa802949b97] [mae-hen-8163-db:24641] [ 7] rhoSimpleFoam(+0x2f96a)[0x559c59b7c96a] [mae-hen-8163-db:24641] *** End of error message *** [mae-hen-8163-db:24639] [ 4] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE7correctEv+0x2a)[0x7f0e3dff387a] [mae-hen-8163-db:24639] [ 5] rhoSimpleFoam(+0x2ae46)[0x558b08c76e46] [mae-hen-8163-db:24639] [ 6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f0e384edb97] [mae-hen-8163-db:24639] [ 7] rhoSimpleFoam(+0x2f96a)[0x558b08c7b96a] [mae-hen-8163-db:24639] *** End of error message *** [mae-hen-8163-db:24638] *** Process received signal *** [mae-hen-8163-db:24638] Signal: Floating point exception (8) [mae-hen-8163-db:24638] Signal code: (-6) [mae-hen-8163-db:24638] Failing at address: 0x3e90000603e [mae-hen-8163-db:24638] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7fafff9cbf20] [mae-hen-8163-db:24638] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7fafff9cbe97] [mae-hen-8163-db:24638] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7fafff9cbf20] [mae-hen-8163-db:24638] [ 3] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE9calculateEv+0x305)[0x7fb0054a2825] [mae-hen-8163-db:24638] [ 4] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE7correctEv+0x2a)[0x7fb0054b487a] [mae-hen-8163-db:24638] [ 5] rhoSimpleFoam([mae-hen-8163-db:24640] *** Process received signal *** +0x2ae46)[0x55c13f784e46] [mae-hen-8163-db:24638] [ 6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7fafff9aeb97] [mae-hen-8163-db:24638] [ 7] rhoSimpleFoam(+0x2f96a)[0x55c13f78996a] [mae-hen-8163-db:24638] *** End of error message *** [mae-hen-8163-db:24640] Signal: Floating point exception (8) [mae-hen-8163-db:24640] Signal code: (-6) [mae-hen-8163-db:24640] Failing at address: 0x3e900006040 [mae-hen-8163-db:24640] [ 0] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f2b6052bf20] [mae-hen-8163-db:24640] [ 1] /lib/x86_64-linux-gnu/libc.so.6(gsignal+0xc7)[0x7f2b6052be97] [mae-hen-8163-db:24640] [ 2] /lib/x86_64-linux-gnu/libc.so.6(+0x3ef20)[0x7f2b6052bf20] [mae-hen-8163-db:24640] [ 3] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE9calculateEv+0x305)[0x7f2b66002825] [mae-hen-8163-db:24640] [ 4] /opt/openfoam5/platforms/linux64GccDPInt32Opt/lib/libfluidThermophysicalModels.so(_ZN4Foam11hePsiThermoINS_9psiThermoENS_11pureMixtureINS_19sutherlandTransportINS_7species6thermoINS_12hConstThermoINS_10perfectGasINS_6specieEEEEENS_22sensibleInternalEnergyEEEEEEEE7correctEv+0x2a)[0x7f2b6601487a] [mae-hen-8163-db:24640] [ 5] rhoSimpleFoam(+0x2ae46)[0x5632368e1e46] [mae-hen-8163-db:24640] [ 6] /lib/x86_64-linux-gnu/libc.so.6(__libc_start_main+0xe7)[0x7f2b6050eb97] [mae-hen-8163-db:24640] [ 7] rhoSimpleFoam(+0x2f96a)[0x5632368e696a] [mae-hen-8163-db:24640] *** End of error message *** -------------------------------------------------------------------------- mpirun noticed that process rank 1 with PID 0 on node mae-hen-8163-db exited on signal 8 (Floating point exception). -------------------------------------------------------------------------- U Code:
inlet1: flowRateInletVelocity; volumetricFlowRate constant 0.0011; inlet2: flowRateInletVelocity; volumetricFlowRate constant 1e-5; outlet: inletOutlet Code:
inlet1: zeroGradient; inlet2: fixedValue; value uniform 1.1e5; outlet: fixedValue; value $internalField; Does anyone spot a problem in here? Why am I getting the time step errors for a seemingly very simple problem? |
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September 12, 2018, 17:29 |
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#2 | |
New Member
Thomas M
Join Date: Aug 2018
Posts: 20
Rep Power: 8 |
Quote:
Where and how did you change fvSolutions to include pMax? Could you provide the code you used for this? |
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September 13, 2018, 06:50 |
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#3 | |
Senior Member
Deep
Join Date: Oct 2017
Posts: 180
Rep Power: 9 |
Quote:
In the SIMPLE subdictionary of fvSolutions: Code:
SIMPLE { nNonOrthogonalCorrectors 0; pMinFactor 0.4; pMaxFactor 1.5; residualControl { p 1e-2; U 1e-4; e 1e-3; "(k|epsilon|omega)" 1e-3; } } |
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