Issue with CFX solver in Learning Hub’s WS01-Mixing-Tee exercise

- February 12, 2019 at 9:18 am
  
  Risto86
  Subscriber
  
  I'm attempting to make my way through some of the learning hub courses as I await my university to license our sponsored software package, using the free student edition in the meantime.
  
  I've gone through this exercise numerous times, starting from scratch twice, and I continue to get the error notices "Non-zero exit code 2" and on the CFX solver outfile, "Solver exited with return code 1".
  
  My understanding is that the student version has a node/element limit of 152k, which was never approached but I still received the error. I went back and applied mesh sizing limits to reduce the mesh to below 32k and I still receive the error.
  
  Is the issue a misapplication somewhere in the meshing or setup process? An issue with my computer, or simply that I'll need to have the licensed academic version to run the solver on this problem?
  
  Attached file note: v0 is before mesh adjustment, v1 is after using sizing to reduce element count.
  
  Will update if I find a solution before someone responds.
  
  Thanks!
- February 12, 2019 at 9:45 am
  
  Rob
  Forum Moderator
  
  You've got a 512k cell count limit, so should be fine with the tutorials. Are there any warnings/messages before the exit code? Those tend to be more useful. Also check disc space both in the working directory but also scratch (set in Workbench -> Tools).
- February 12, 2019 at 9:58 am
  
  DrAmine
  Ansys Employee
  
  Are you seeing any license error messages in the CFX out file?
- February 12, 2019 at 11:15 am
  
  Risto86
  Subscriber
  
  I recorded my desktop as I ran the solver so you can see what I see. I've also attached the CFX solver out file as copied into notepad, which does show a warning on the top which I don't understand. I monitored my computer cpu usage and memory during a subsequent run, and it didn't get anywhere near maxed out. (edit with attached mp4 pending)
  
  Within (tell me if this is the right place to look to check disc space) Workbench->Tools->Options->Mechanical ADPL->Default Memory: 1024mb; Workspace Memory: 1048mb.
  
  I haven't seen any notice of license errors in the outfile, unless I somehow overlooked it multiple times
- February 12, 2019 at 11:51 am
  
  Rob
  Forum Moderator
  
  For the disc space just use the File Manager/Explorer and check for free space. As staff we can't open attachments so can't review the out file.
- February 12, 2019 at 12:04 pm
  
  Risto86
  Subscriber
  
  That's unfortunate, I'll take it the video will be a waste to upload... I have 676 GB of free space on my computer
  
  The warning at the top of the file is "Warning! Revision is over 16 characters long 39"
  
  Then at the bottom I see: "An error has occurred in cfx5solve: The ANSYS CFX solver exited with return code 1. No results file has been created."
  
  Full out file as below:
  
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  Warning!
  
  Revision is over 16 characters long 39
  
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  This run of the CFX Welcome to ANSYS Student Discovery Live Solver
  
  started at 02:55:06 on 12 Feb 2019 by user risto on DESKTOP-17EOLLP
  
  (intel_xeon64.sse2_winnt) using the command:
  
  "C:Program FilesANSYS IncANSYS Studentv192CFXbinperllibcfx5solve.pl"
  
  -batch -ccl runInput.ccl -fullname CFX_003
  
  Welcome to ANSYS Student Discovery Live
  
  Point Releases and Patches installed:
  
  Academic Student Release 19.2
  
  FENSAP-ICE Release 19.2
  
  AIM Academic Student Release 19.2
  
  AIM Release 19.2
  
  Discovery Release
  
  Setting up CFX Solver run ...
  
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  CFX Command Language for Run
  
  +
  +
  
  LIBRARY:
  
  MATERIAL: Water
  
  Material Description = Water (liquid)
  
  Material Group = Water Data, Constant Property Liquids
  
  Option = Pure Substance
  
  Thermodynamic State = Liquid
  
  PROPERTIES:
  
  Option = General Material
  
  EQUATION OF STATE:
  
  Density = 997.0 [kg m^-3]
  
  Molar Mass = 18.02 [kg kmol^-1]
  
  Option = Value
  
  END
  
  SPECIFIC HEAT CAPACITY:
  
  Option = Value
  
  Specific Heat Capacity = 4181.7 [J kg^-1 K^-1]
  
  Specific Heat Type = Constant Pressure
  
  END
  
  REFERENCE STATE:
  
  Option = Specified Point
  
  Reference Pressure = 1 [atm]
  
  Reference Specific Enthalpy = 0.0 [J/kg]
  
  Reference Specific Entropy = 0.0 [J/kg/K]
  
  Reference Temperature = 25 [C]
  
  END
  
  DYNAMIC VISCOSITY:
  
  Dynamic Viscosity = 8.899E-4 [kg m^-1 s^-1]
  
  Option = Value
  
  END
  
  THERMAL CONDUCTIVITY:
  
  Option = Value
  
  Thermal Conductivity = 0.6069 [W m^-1 K^-1]
  
  END
  
  ABSORPTION COEFFICIENT:
  
  Absorption Coefficient = 1.0 [m^-1]
  
  Option = Value
  
  END
  
  SCATTERING COEFFICIENT:
  
  Option = Value
  
  Scattering Coefficient = 0.0 [m^-1]
  
  END
  
  REFRACTIVE INDEX:
  
  Option = Value
  
  Refractive Index = 1.0 [m m^-1]
  
  END
  
  THERMAL EXPANSIVITY:
  
  Option = Value
  
  Thermal Expansivity = 2.57E-04 [K^-1]
  
  END
  
  END
  
  END
  
  END
  
  FLOW: Flow Analysis 1
  
  SOLUTION UNITS:
  
  Angle Units = [rad]
  
  Length Units = [m]
  
  Mass Units = [kg]
  
  Solid Angle Units = [sr]
  
  Temperature Units = [K]
  
  Time Units =
  
  END
  
  ANALYSIS TYPE:
  
  Option = Steady State
  
  EXTERNAL SOLVER COUPLING:
  
  Option = None
  
  END
  
  END
  
  DOMAIN: junction
  
  Coord Frame = Coord 0
  
  Domain Type = Fluid
  
  Location = Fluid Domain
  
  BOUNDARY: inlety
  
  Boundary Type = INLET
  
  Location = inlet y
  
  BOUNDARY CONDITIONS:
  
  FLOW REGIME:
  
  Option = Subsonic
  
  END
  
  HEAT TRANSFER:
  
  Option = Static Temperature
  
  Static Temperature = 10 [C]
  
  END
  
  MASS AND MOMENTUM:
  
  Normal Speed = 5 [m s^-1]
  
  Option = Normal Speed
  
  END
  
  TURBULENCE:
  
  Option = Medium Intensity and Eddy Viscosity Ratio
  
  END
  
  END
  
  END
  
  BOUNDARY: inletz
  
  Boundary Type = INLET
  
  Location = inlet z
  
  BOUNDARY CONDITIONS:
  
  FLOW REGIME:
  
  Option = Subsonic
  
  END
  
  HEAT TRANSFER:
  
  Option = Static Temperature
  
  Static Temperature = 90 [C]
  
  END
  
  MASS AND MOMENTUM:
  
  Normal Speed = 3 [m s^-1]
  
  Option = Normal Speed
  
  END
  
  TURBULENCE:
  
  Option = Medium Intensity and Eddy Viscosity Ratio
  
  END
  
  END
  
  END
  
  BOUNDARY: outlet
  
  Boundary Type = OUTLET
  
  Location = outlet
  
  BOUNDARY CONDITIONS:
  
  FLOW REGIME:
  
  Option = Subsonic
  
  END
  
  MASS AND MOMENTUM:
  
  Option = Average Static Pressure
  
  Pressure Profile Blend = 0.05
  
  Relative Pressure = 0 [Pa]
  
  END
  
  PRESSURE AVERAGING:
  
  Option = Average Over Whole Outlet
  
  END
  
  END
  
  END
  
  BOUNDARY: wall
  
  Boundary Type = WALL
  
  Location = F29.40,F30.40,F31.40,F32.40,F33.40
  
  BOUNDARY CONDITIONS:
  
  HEAT TRANSFER:
  
  Option = Adiabatic
  
  END
  
  MASS AND MOMENTUM:
  
  Option = No Slip Wall
  
  END
  
  WALL ROUGHNESS:
  
  Option = Smooth Wall
  
  END
  
  END
  
  END
  
  DOMAIN MODELS:
  
  BUOYANCY MODEL:
  
  Option = Non Buoyant
  
  END
  
  DOMAIN MOTION:
  
  Option = Stationary
  
  END
  
  MESH DEFORMATION:
  
  Option = None
  
  END
  
  REFERENCE PRESSURE:
  
  Reference Pressure = 1 [atm]
  
  END
  
  END
  
  FLUID DEFINITION: Fluid 1
  
  Material = Water
  
  Option = Material Library
  
  MORPHOLOGY:
  
  Option = Continuous Fluid
  
  END
  
  END
  
  FLUID MODELS:
  
  COMBUSTION MODEL:
  
  Option = None
  
  END
  
  HEAT TRANSFER MODEL:
  
  Option = Thermal Energy
  
  END
  
  THERMAL RADIATION MODEL:
  
  Option = None
  
  END
  
  TURBULENCE MODEL:
  
  Option = k epsilon
  
  END
  
  TURBULENT WALL FUNCTIONS:
  
  Option = Scalable
  
  END
  
  END
  
  END
  
  OUTPUT CONTROL:
  
  MONITOR OBJECTS:
  
  MONITOR BALANCES:
  
  Option = Full
  
  END
  
  MONITOR FORCES:
  
  Option = Full
  
  END
  
  MONITOR PARTICLES:
  
  Option = Full
  
  END
  
  MONITOR POINT: p inlety
  
  Coord Frame = Coord 0
  
  Expression Value = areaAve(Pressure )@inlety
  
  Option = Expression
  
  END
  
  MONITOR POINT: p inletz
  
  Coord Frame = Coord 0
  
  Expression Value = areaAve(Pressure )@inletz
  
  Option = Expression
  
  END
  
  MONITOR RESIDUALS:
  
  Option = Full
  
  END
  
  MONITOR TOTALS:
  
  Option = Full
  
  END
  
  END
  
  RESULTS:
  
  File Compression Level = Default
  
  Option = Standard
  
  END
  
  END
  
  SOLVER CONTROL:
  
  Turbulence Numerics = First Order
  
  ADVECTION SCHEME:
  
  Option = High Resolution
  
  END
  
  CONVERGENCE CONTROL:
  
  Length Scale Option = Conservative
  
  Maximum Number of Iterations = 100
  
  Minimum Number of Iterations = 1
  
  Timescale Control = Auto Timescale
  
  Timescale Factor = 1.0
  
  END
  
  CONVERGENCE CRITERIA:
  
  Residual Target = 1.E-4
  
  Residual Type = RMS
  
  END
  
  DYNAMIC MODEL CONTROL:
  
  Global Dynamic Model Control = On
  
  END
  
  END
  
  END
  
  COMMAND FILE:
  
  Version = 19.2
  
  Results Version = 19.2
  
  END
  
  SIMULATION CONTROL:
  
  EXECUTION CONTROL:
  
  EXECUTABLE SELECTION:
  
  Double Precision = No
  
  Large Problem = No
  
  END
  
  INTERPOLATOR STEP CONTROL:
  
  Runtime Priority = Standard
  
  MEMORY CONTROL:
  
  Memory Allocation Factor = 1.0
  
  END
  
  END
  
  PARALLEL HOST LIBRARY:
  
  HOST DEFINITION: desktop17eollp
  
  Remote Host Name = DESKTOP-17EOLLP
  
  Host Architecture String = winnt-amd64
  
  Installation Root = C:Program FilesANSYS IncANSYS Studentv%vCFX
  
  END
  
  END
  
  PARTITIONER STEP CONTROL:
  
  Multidomain Option = Automatic
  
  Runtime Priority = Standard
  
  MEMORY CONTROL:
  
  Memory Allocation Factor = 1.0
  
  END
  
  PARTITION SMOOTHING:
  
  Maximum Partition Smoothing Sweeps = 100
  
  Option = Smooth
  
  END
  
  PARTITIONING TYPE:
  
  MeTiS Type = k-way
  
  Option = MeTiS
  
  Partition Size Rule = Automatic
  
  END
  
  END
  
  RUN DEFINITION:
  
  Run Mode = Full
  
  Solver Input File = CFX.def
  
  Solver Results File =
  
  CUsers/risto/Desktop/WS01-Mixing-Tee_pending/dp0_CFX_Solution/CFX_0
  
  03.res
  
  END
  
  SOLVER STEP CONTROL:
  
  Runtime Priority = Standard
  
  MEMORY CONTROL:
  
  Memory Allocation Factor = 1.0
  
  END
  
  PARALLEL ENVIRONMENT:
  
  Number of Processes = 1
  
  Start Method = Serial
  
  END
  
  END
  
  END
  
  END
  
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  Solver
  
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  ANSYS(R) CFX(R) Solver
  
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  An error has occurred in cfx5solve:
  
  The ANSYS CFX solver exited with return code 1. No results file has been created.
  
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  End of solution stage.
  
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  For CFX runs launched from Workbench, the final locations of directories
  
  and files generated may differ from those shown.
  
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  This run of the ANSYS CFX Solver has finished.
- February 12, 2019 at 1:11 pm
  
  DrAmine
  Ansys Employee
  
  Looks consistent: are there any other error messages printed in the CFX console? Can you try running the definition file in CFX Standalone? Can you attached the definition file here?
- February 12, 2019 at 4:09 pm
  
  Risto86
  Subscriber
  
  I'm sorry, can you explain what you're asking for, or point me to an explanation of how to do it?
- February 12, 2019 at 6:04 pm
  
  DrAmine
  Ansys Employee
  
  You have a definition file created in the workbench directory (name*.def). Now Start CFX Solver out of the Workbench: Start Programs, CFX, then CFX Solver from the CFX Launcher Panel, define Run, give the path to the definition file and start.
- February 15, 2019 at 3:46 am
  
  Risto86
  Subscriber
  
  I apologize, it took me a couple of days to get back to this.
  
  I tried your suggestion, and the result is exactly the same in the Solver Manager, but I do have a shell window with this additional output:
  
  Warning!
  
  Revision is over 16 characters long 39
  
  2019/02/14 19:400 INFO Demo license file C:Program FilesANSYS IncANSYS StudentShared FilesLicensingstudent.lic exists.
  
  Warning!
  
  Revision is over 16 characters long 39
  
  Unable to assign product revision id.
  
  An error has occurred in cfx5solve:
  
  The ANSYS CFX solver exited with return code 1. No results file has been created.
  
  Use of uninitialized value $data_items{"Application.Buildinfo"} in sprintf at C:Program FilesANSYS IncANSYS Studentv192CFXbin/perllib/CFX5/Simulation/Configuration/APIP.pm line 119.
  
  Use of uninitialized value $data_items{"Mesh.Elements"} in sprintf at C:Program FilesANSYS IncANSYS Studentv192CFXbin/perllib/CFX5/Simulation/Configuration/APIP.pm line 119.
  
  Use of uninitialized value $data_items{"Mesh.Faces"} in sprintf at C:Program FilesANSYS IncANSYS Studentv192CFXbin/perllib/CFX5/Simulation/Configuration/APIP.pm line 119.
  
  Use of uninitialized value $data_items{"Mesh.Nodes"} in sprintf at C:Program FilesANSYS IncANSYS Studentv192CFXbin/perllib/CFX5/Simulation/Configuration/APIP.pm line 119.
  
  Use of uninitialized value $data_items{"Mesh.Zones"} in sprintf at C:Program FilesANSYS IncANSYS Studentv192CFXbin/perllib/CFX5/Simulation/Configuration/APIP.pm line 119.
  
  Use of uninitialized value $data_items{"Session.TotalCpuTime"} in sprintf at C:Program FilesANSYS IncANSYS Studentv192CFXbin/perllib/CFX5/Simulation/Configuration/APIP.pm line 119.
- February 15, 2019 at 7:05 am
  
  DrAmine
  Ansys Employee
  
  Can you please for debugging purposes create a simple pipe with velocity inlet, wall and pressure outlet, carry out that steady simulation and check if it works. Thanks
- February 15, 2019 at 9:58 am
  
  Risto86
  Subscriber
  
  It seems that there was an issue with the geometry. I created my own version of the tee in SpaceClaim and the simulation ran perfectly!
- February 15, 2019 at 10:32 am
  
  DrAmine
  Ansys Employee
  
  Nice. Please mark this as resolved.