CFD Online Discussion Forums

CFD Online Discussion Forums (http://www.cfd-online.com/Forums/)
-   CFX (http://www.cfd-online.com/Forums/cfx/)
-   -   why the solver reject it? Anyone with experience? (http://www.cfd-online.com/Forums/cfx/25729-why-solver-reject-anyone-experience.html)

bearcat April 25, 2008 20:20

why the solver reject it? Anyone with experience?
 
Hi,

I ran a very simple CFX application. But the solver could not work anyway. I am sure the licence is 100% okay. I first thought perhaps I used multi-block in the domain in my CGNS mesh. Then I try a Fluent mesh. It should be a single domain without internal interface this time. But the problem still appear. I have absolutely no idea about this trouble. Anything wrong with my setup or mesh?

Thank you.

The following is the solver message:(sorry it might be a little bit long)

+--------------------------------------------------------------------+ | | | CFX Command Language for Run | | | +--------------------------------------------------------------------+

LIBRARY:

MATERIAL: Air Ideal Gas

Material Description = Air Ideal Gas (constant Cp)

Material Group = Air Data,Calorically Perfect Ideal Gases

Option = Pure Substance

Thermodynamic State = Gas

PROPERTIES:

Option = General Material

ABSORPTION COEFFICIENT:

Absorption Coefficient = 0.01 [m^-1]

Option = Value

END

DYNAMIC VISCOSITY:

Dynamic Viscosity = 1.831E-05 [kg m^-1 s^-1]

Option = Value

END

EQUATION OF STATE:

Molar Mass = 28.96 [kg kmol^-1]

Option = Ideal Gas

END

REFERENCE STATE:

Option = Specified Point

Reference Pressure = 1 [atm]

Reference Specific Enthalpy = 0. [J/kg]

Reference Specific Entropy = 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 = 1.0044E+03 [J kg^-1 K^-1]

Specific Heat Type = Constant Pressure

END

THERMAL CONDUCTIVITY:

Option = Value

Thermal Conductivity = 2.61E-2 [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: Default Domain Modified

Coord Frame = Coord 0

Domain Type = Fluid

Fluids List = Air Ideal Gas

Location = fluid

BOUNDARY: Default Domain Modified Default

Boundary Type = WALL

Location = wall 4

BOUNDARY CONDITIONS:

HEAT TRANSFER:

Option = Adiabatic

END

WALL INFLUENCE ON FLOW:

Option = No Slip

END

WALL ROUGHNESS:

Option = Smooth Wall

END

END

END

BOUNDARY: inlet

Boundary Type = INLET

Location = pressure inlet 6

BOUNDARY CONDITIONS:

FLOW REGIME:

Option = Supersonic

END

HEAT TRANSFER:

Option = Static Temperature

Static Temperature = 132.56 [K]

END

MASS AND MOMENTUM:

Normal Speed = 568 [m s^-1]

Option = Normal Speed and Pressure

Relative Static Pressure = 10700 [Pa]

END

TURBULENCE:

Option = Low Intensity and Eddy Viscosity Ratio

END

END

END

BOUNDARY: outlet

Boundary Type = OUTLET

Location = pressure outlet 5

BOUNDARY CONDITIONS:

FLOW REGIME:

Option = Supersonic

END

END

END

BOUNDARY: plenum_outlet

Boundary Type = OUTLET

Location = pressure outlet plenum

BOUNDARY CONDITIONS:

FLOW REGIME:

Option = Subsonic

END

MASS AND MOMENTUM:

Option = Average Static Pressure

Relative Pressure = 2741 [Pa]

END

PRESSURE AVERAGING:

Option = Average Over Whole Outlet

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 = 0 [atm]

END

END

FLUID MODELS:

COMBUSTION MODEL:

Option = None

END

HEAT TRANSFER MODEL:

Option = Total Energy

END

THERMAL RADIATION MODEL:

Option = None

END

TURBULENCE MODEL:

Option = k epsilon

END

TURBULENT WALL FUNCTIONS:

Option = Scalable

END

END

END

OUTPUT CONTROL:

RESULTS:

File Compression Level = Default

Option = Standard

END

END

SOLVER CONTROL:

ADVECTION SCHEME:

Option = Upwind

END

CONVERGENCE CONTROL:

Length Scale Option = Conservative

Maximum Number of Iterations = 50

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 = 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: host6170215

Remote Host Name = 617-0215

Host Architecture String = intel_xeon64.sse2_winnt5.1

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 = C:/Team/cfx_fluent_bleed.def

Interpolate Initial Values = Off

Run Mode = Full

END

SOLVER STEP CONTROL:

Runtime Priority = Standard

EXECUTABLE SELECTION:

Double Precision = Off

END

MEMORY CONTROL:

Memory Allocation Factor = 1.0

END

PARALLEL ENVIRONMENT:

Number of Processes = 1

Start Method = Serial

END

END END

+--------------------------------------------------------------------+ | | | Solver | | | +--------------------------------------------------------------------+

+--------------------------------------------------------------------+ | | | ANSYS CFX Solver 11.0 | | | | Version 2007.01.15-19.20 Mon Jan 15 19:24:21 GMTST 2007 | | | | Executable Attributes | | | | single-int32-32bit-novc6-optimised-supfort-noprof-nospag-lcomp | | | | Copyright 1996-2007 ANSYS Europe Ltd. | +--------------------------------------------------------------------+

+--------------------------------------------------------------------+ | Job Information | +--------------------------------------------------------------------+

Run mode: serial run

Host computer: 617-0215 Job started: Fri Apr 25 20:04:55 2008 No license for ANSYS CFX Solver (All Models) could be found.

+--------------------------------------------------------------------+ | ERROR #001100247 has occurred in subroutine . | | Message: | | | | The solver is unable to continue because of licensing problems. | | | | A license for the following capability level could not be checked | | out: | | | | Basic Capability Solver | | | | Please carefully examine the error message output above and check | | that: | | | | 1) LM_LICENSE_FILE points to the correct license server | | | | 2) The ".flexlmrc" file points to the correct license server | | | | 3) The required capabililty exists on the license server | | | | 4) The license server is up and running. | | | | These problems can be checked using the ANSYS license manager. For| | further troubleshooting information please consult the section on | | setting up licensing in the ANSYS CFX installation manual. | +--------------------------------------------------------------------+

+--------------------------------------------------------------------+ | An error has occurred in cfx5solve: | | | | The ANSYS CFX solver exited with return code 1. No results file | | has been created. | +--------------------------------------------------------------------+

End of solution stage.


andy2o April 27, 2008 13:39

Re: why the solver reject it? Anyone with experien
 
"I am sure the licence is 100% okay."

Sorry, but unfortunately CFX simply does not seem to agree with you! :( So what makes you sure?

I don't think this has anything to do with your mesh or problem set-up - as a different error message would be given. And it is the basic solver it cannot find a license for...

If CFX crashes during a run, or if there are network or computer problems, sometimes a license is not released correctly at the end of a run. If this happens, when you start the next run the license manager thinks the old run is still going and still using your license. You should run the ANSYS license manager, as the error message advises - I often find the easiest thing is to tell it to "Reread the license file" (but on a multiple user system you have to be careful!).

Regards, andy

bearcat April 27, 2008 14:49

Re: why the solver reject it? Anyone with experien
 
Thank you for your advice.

I search this forum and find that I am not the only one encountering "ERROR #001100247". I tested a very simple channel flow case, it's okay. But when I tried some other cases, the problem comes again. I have the experience running a multiblock turbine stator and rotor separately, they are all right. When I combined the two domains together and ran the coupled simulation, the "ERROR #001100247" arose. The domain interface setup is correct to my best knowledge.

If a definition file worked once, it works every time. If it doesn't, it will never work. This is very tricky. I don't have any clue where is wrong. As I use CFX on workstation in the college computer lab, I can't access the license manager.

Thanks.

andy2o April 27, 2008 18:12

Re: why the solver reject it? Anyone with experien
 
OK... I was clearly wrong about this one. Apologies! I have been lucky enough never to see this problem myself (all my license errors have indeed been real license errors...). Good luck with sorting this out!

I hope someone else posts more helpful advice than I did! :)

Best regards, Andy

Glenn Horrocks April 27, 2008 20:03

Re: why the solver reject it? Anyone with experien
 
Hi,

The problem is definitely in the licensing. The error message clearly says so.

I think what the problem is that you have a basic capability solver license, and that does not allow many physics such as multiple frames of reference (you use that for turbine simulations), multiphase, radiation and several other advanced physics options. There is also a node-limited solver option which some academic institutions use, you can only run small models on these licenses.

Glenn Horrocks

bearcat April 28, 2008 12:47

Re: why the solver reject it? Anyone with experien
 
I first did think we lack the full capability solver license when I did the coupled turbine simulation. But I have to give up this idea later when one of my coworker got the same work done in the lab. I got a copy of his .cfx and def. documents, and it really runs! I tried to find out what's the difference between his setup and mine. He used only one block for stator, one block for rotor, and the grid quality is not very good. he can applied multiphase flow model and erosion model in the simulation. So far, I have no hint and no luck stopping this evil error.

Our university obtain the CFX license from the donation agreement with ANSYS Inc. At least the full capacity solver is okay as I know. Whether it sets a limit on the maximum cell number, I never meet such warning message and have to check it out.

Thanks.

bearcat April 28, 2008 14:08

Re: why the solver reject it? Anyone with experien
 
I find it out now. There really exists a limit for the maximum number of cells that I can use in the software. I tried about 700k cells, it shows the license problem. when I cut the domain in half, it works this time.


All times are GMT -4. The time now is 09:25.