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November 8, 2009, 19:52 |
CFX doesn't continue calculation...
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#1 |
Senior Member
Join Date: Nov 2009
Posts: 125
Rep Power: 16 |
hi all,
i'm facing a pr9oblem with CFX where it doesn't continue on with the calxculation after diagnosing and setting up. The Solver starts as usual with the following and then stops at the end of the message. i left this calculation through the weekend, and it never continued.... What can i check to resolve this problem please? My PC is only running ANSYS and no other programs. However, from the Windows Task Manager, CPU Usage is 50%. The message is copied below: This run of the CFX-11.0 Solver started at 18:6:45 on 6 Nov 2009 by user Administrator on JJEWORKSTATION3 (intel_p3.sse_winnt) using the command: "C:\Program Files\ANSYS Inc\v110\CFX\bin\perllib\cfx5solve.pl" -stdout-comms -batch -ccl - -P 35 -sharedlic-port 4491 Installed patches: * Service Pack 1 * Setting up CFX Solver run ... +--------------------------------------------------------------------+ | | | CFX Command Language for Run | | | +--------------------------------------------------------------------+ | +--------------------------------------------------------------------+ LIBRARY: CEL: EXPRESSIONS: outtemp = areaAve(T)@REGION: out END END MATERIAL: Aluminium Material Group = CHT Solids,Particle Solids Option = Pure Substance Thermodynamic State = Solid PROPERTIES: Option = General Material EQUATION OF STATE: Density = 2680 [kg m^-3] Molar Mass = 26.98 [kg kmol^-1] Option = Value END REFERENCE STATE: Option = Specified Point Reference Specific Enthalpy = 0 [J/kg] Reference Specific Entropy = 0 [J/kg/K] Reference Temperature = 25 [C] END SPECIFIC HEAT CAPACITY: Option = Value Specific Heat Capacity = 837 [J kg^-1 K^-1] END THERMAL CONDUCTIVITY: Option = Value Thermal Conductivity = 159 [W m^-1 K^-1] END END END MATERIAL: Water Material Description = Water (liquid) Material Group = Water Data, Constant Property Liquids Option = Pure Substance Thermodynamic State = Liquid PROPERTIES: Option = General Material Thermal Expansivity = 2.57E-04 [K^-1] ABSORPTION COEFFICIENT: Absorption Coefficient = 1.0 [m^-1] Option = Value END DYNAMIC VISCOSITY: Dynamic Viscosity = 8.899E-4 [kg m^-1 s^-1] Option = Value END EQUATION OF STATE: Density = 997.0 [kg m^-3] Molar Mass = 18.02 [kg kmol^-1] Option = Value 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 REFRACTIVE INDEX: Option = Value Refractive Index = 1.0 [m m^-1] END SCATTERING COEFFICIENT: Option = Value Scattering Coefficient = 0.0 [m^-1] END SPECIFIC HEAT CAPACITY: Option = Value Specific Heat Capacity = 4181.7 [J kg^-1 K^-1] Specific Heat Type = Constant Pressure END THERMAL CONDUCTIVITY: Option = Value Thermal Conductivity = 0.6069 [W m^-1 K^-1] END END END END FLOW: SOLUTION UNITS: Angle Units = [rad] Length Units = [m] Mass Units = [kg] Solid Angle Units = [sr] Temperature Units = [K] Time Units = [s] END SIMULATION TYPE: Option = Steady State EXTERNAL SOLVER COUPLING: Option = None END END DOMAIN: fluid Coord Frame = Coord 0 Domain Type = Fluid Fluids List = Water Location = B4437 BOUNDARY: Default Fluid Solid Interface Side 1 Boundary Type = INTERFACE Location = \ F4439.4437,F4430.4437,F4427.4437,F4434.4437,F4435. 4437,F4426.4437,F44\ 33.4437,F4431.4437,F4428.4437,F4432.4437,F4429.443 7,F4425.4437 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END WALL INFLUENCE ON FLOW: Option = No Slip END WALL ROUGHNESS: Option = Smooth Wall END END END BOUNDARY: inlet Boundary Type = INLET Location = in BOUNDARY CONDITIONS: FLOW DIRECTION: Option = Normal to Boundary Condition END FLOW REGIME: Option = Subsonic END HEAT TRANSFER: Option = Static Temperature Static Temperature = 363 [K] END MASS AND MOMENTUM: Mass Flow Rate = 0.2 [kg s^-1] Option = Mass Flow Rate END TURBULENCE: Option = Medium Intensity and Eddy Viscosity Ratio END END END BOUNDARY: outlet Boundary Type = OPENING Location = out BOUNDARY CONDITIONS: FLOW DIRECTION: Option = Normal to Boundary Condition END FLOW REGIME: Option = Subsonic END HEAT TRANSFER: Opening Temperature = outtemp Option = Opening Temperature END MASS AND MOMENTUM: Option = Opening Pressure and Direction Relative Pressure = 0 [Pa] END TURBULENCE: Option = Medium Intensity and Eddy Viscosity Ratio 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 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 INITIALISATION: Option = Automatic INITIAL CONDITIONS: Velocity Type = Cartesian CARTESIAN VELOCITY COMPONENTS: Option = Automatic END EPSILON: Option = Automatic END K: Option = Automatic END STATIC PRESSURE: Option = Automatic END TEMPERATURE: Option = Automatic END END END END DOMAIN: solid Domain Type = Solid Location = B78 Solids List = Aluminium BOUNDARY: Default Fluid Solid Interface Side 2 Boundary Type = INTERFACE Location = \ F61.78,F56.78,F66.78,F62.78,F59.78,F65.78,F63.78,F 58.78,F57.78,F64.78\ ,F55.78,F77.78 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Conservative Interface Flux END END END BOUNDARY: air Boundary Type = WALL Location = air convert BOUNDARY CONDITIONS: HEAT TRANSFER: Heat Transfer Coefficient = 130 [W m^-2 K^-1] Option = Heat Transfer Coefficient Outside Temperature = 393 [K] END END END BOUNDARY: heater Boundary Type = WALL Location = heater BOUNDARY CONDITIONS: HEAT TRANSFER: Heat Flux in = 246327 [W m^-2] Option = Heat Flux END END END BOUNDARY: solid Default Boundary Type = WALL Location = F60.78,F67.78,F68.78,F70.78 BOUNDARY CONDITIONS: HEAT TRANSFER: Option = Adiabatic END END END DOMAIN MODELS: DOMAIN MOTION: Option = Stationary END MESH DEFORMATION: Option = None END END INITIALISATION: Option = Automatic INITIAL CONDITIONS: TEMPERATURE: Option = Automatic END END END SOLID MODELS: HEAT TRANSFER MODEL: Option = Thermal Energy END THERMAL RADIATION MODEL: Option = None END END END DOMAIN INTERFACE: Default Fluid Solid Interface Boundary List1 = Default Fluid Solid Interface Side 1 Boundary List2 = Default Fluid Solid Interface Side 2 Interface Type = Fluid Solid INTERFACE MODELS: Option = General Connection FRAME CHANGE: Option = None END PITCH CHANGE: Option = None END END MESH CONNECTION: Option = Automatic END END OUTPUT CONTROL: RESULTS: File Compression Level = Default Option = Standard END END SOLVER CONTROL: ADVECTION SCHEME: Option = High Resolution END CONVERGENCE CONTROL: Length Scale Option = Conservative Maximum Number of Iterations = 1000 Solid Timescale = 2 [s] Solid Timescale Control = Physical Timescale Timescale Control = Auto Timescale Timescale Factor = 1.0 END CONVERGENCE CRITERIA: Residual Target = 0.00001 Residual Type = RMS END DYNAMIC MODEL CONTROL: Global Dynamic Model Control = On END END END COMMAND FILE: Version = 11.0 Results Version = 11.0 END EXECUTION CONTROL: INTERPOLATOR STEP CONTROL: Runtime Priority = Standard EXECUTABLE SELECTION: Double Precision = Off END MEMORY CONTROL: Memory Allocation Factor = 1.0 END END PARALLEL HOST LIBRARY: HOST DEFINITION: jjeworkstation3 Host Architecture String = winnt-amd64 Installation Root = C:\Program Files\ANSYS Inc\v%v\CFX END END PARTITIONER STEP CONTROL: Multidomain Option = Independent Partitioning Runtime Priority = Standard EXECUTABLE SELECTION: Use Large Problem Partitioner = Off END MEMORY CONTROL: Memory Allocation Factor = 1.0 END PARTITIONING TYPE: MeTiS Type = k-way Option = MeTiS Partition Size Rule = Automatic END END RUN DEFINITION: Definition File = E:/Yi CHENG/JJE3/ANSYS WB/J3G7/YXL strhse03/Model.def Interpolate Initial Values = Off Run Mode = Full END SOLVER STEP CONTROL: Runtime Priority = Standard EXECUTABLE SELECTION: Double Precision = Off END LICENSE CONTROL: Preferred License = 35 Shared License Port = 4491 END MEMORY CONTROL: Memory Allocation Factor = 1.0 END PARALLEL ENVIRONMENT: Number of Processes = 1 Start Method = Serial END END END Please help. Thank you for your kind attention. Regards, mactech001 |
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November 8, 2009, 21:24 |
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#2 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,828
Rep Power: 144 |
Can you describe what you are modelling? Any error messages?
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November 8, 2009, 22:06 |
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#3 |
Senior Member
Join Date: Nov 2009
Posts: 125
Rep Power: 16 |
Hi Glenn,
i'm trying to model the electrical machine with water cooling channels. no error appeared, no error dialog boxes..... It seems to be continuing to diagnose the setup or doing something.... but never got into the actual calculation. regards, mactech001 |
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November 9, 2009, 00:47 |
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#4 |
Member
SanS
Join Date: Mar 2009
Posts: 41
Rep Power: 17 |
Hi, Is this the first time your running a simulation on this PC?
I have faced such problems before. It used to be with runs in parallel wherein MPICH2 was still running after the previous simulation or if the ports were blocked by firewall etc. Its worth checking your license port that you have mentioned in the license control. |
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November 9, 2009, 04:45 |
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#5 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,828
Rep Power: 144 |
Can you run the tutorial examples? This checks your installation of CFX and licensing is OK.
How big is the simulation and how much memory do you have? If you don't have enough memory it may appear to hang very early in the simulation as it attempts to use swap memory which is VERY slow. |
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November 15, 2009, 20:18 |
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#6 |
Senior Member
Join Date: Nov 2009
Posts: 125
Rep Power: 16 |
Hi guys,
Thanks so much for your replies. Running the CHT tutorial gave me the same problem before... what i've done now is re-installing ANSYS v11 and CFX v11, and now it seems to be running ok, though slow which could point to low memory RAM or something...
__________________
Thank you for your kind attention. Kind regards, mactech001 Currently using: ANSYS v13 |
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November 15, 2009, 21:25 |
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#7 |
Super Moderator
Glenn Horrocks
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 17,828
Rep Power: 144 |
How much RAM do you have? What CPU? Have you checked no other programs (eg virus checker) is hogging CPU load?
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