CFX doesn't continue calculation...
 

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

Can you describe what you are modelling? Any error messages?

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

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.

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.

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...

How much RAM do you have? What CPU? Have you checked no other programs (eg virus checker) is hogging CPU load?