
[Sponsors] 
August 23, 2013, 05:07 

#21 
Member
Martin Novák
Join Date: Dec 2012
Location: Prague
Posts: 56
Rep Power: 4 

August 23, 2013, 05:25 

#22 
New Member
Basta
Join Date: Jul 2013
Posts: 28
Rep Power: 3 
Here is the system folder of the simple case (simulation inside cylinder)


August 23, 2013, 05:40 

#23 
Member
Martin Novák
Join Date: Dec 2012
Location: Prague
Posts: 56
Rep Power: 4 

August 23, 2013, 06:45 

#24  
New Member
Basta
Join Date: Jul 2013
Posts: 28
Rep Power: 3 
Quote:
Which case do you mean because at the begining i posted my valve studying case problem . After that i posted just a simple case to generalize my problem which is just a cylinder see post #18. So i thought that you told me about the simple case which is just a cyliner and i had the same problem at the interface between the inlet and the wall with elements with very high pressure. 

August 23, 2013, 12:24 

#25  
Member
Martin Novák
Join Date: Dec 2012
Location: Prague
Posts: 56
Rep Power: 4 
Quote:


August 26, 2013, 09:22 

#26 
New Member
Basta
Join Date: Jul 2013
Posts: 28
Rep Power: 3 
Dear Martin,
Excuse me , I attached a wrong case. Here are the write one. Best regards, Mina 

August 28, 2013, 09:08 

#27 
New Member
Basta
Join Date: Jul 2013
Posts: 28
Rep Power: 3 
Hello all,
Did anybody have a solution for my problem? Best regards, Mina 

August 28, 2013, 11:46 

#28 
Senior Member
Ehsan
Join Date: Oct 2012
Location: Iran
Posts: 2,186
Rep Power: 16 
Hi Mina
I changed divScheme by adding bounded to the terms with phi and it seems run without problem. Code:
divSchemes { default none; div(phi,U) bounded Gauss GammaV 0.5; //was 0.5 1.0 div(phi,k) bounded Gauss limitedLinear 1; div(phi,epsilon) bounded Gauss limitedLinear 1; //div((nuEff*dev(grad(U).T()))) Gauss linear; div((nuEff*dev(T(grad(U))))) Gauss linear; //div((nuEff*dev(grad(U).T()))) Gauss linear faceMDLimited Gauss linear 0.85; //div(phi,U) Gauss linearUpwindV faceMDLimited linear 0.68; //was 0.5 1.0 //div(phi,k) Gauss linearUpwind faceMDLimited Gauss linear 0.2; //div(phi,epsilon) Gauss linearUpwind faceMDLimited Gauss linear 0.91; //div((nuEff*dev(grad(U).T()))) Gauss linearUpwind faceMDLimited Gauss linear 0.85; }
__________________
Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked. 

August 29, 2013, 04:29 

#29  
New Member
Basta
Join Date: Jul 2013
Posts: 28
Rep Power: 3 
Quote:
Dear Ehsan, I got this error after modifying divScheme: Code:
> FOAM FATAL IO ERROR: Unknown convection scheme bounded Valid convection schemes are : 1 ( Gauss ) file: /home/fayez/Bureau/ehsan_test/system/fvSchemes::divSchemes::div(phi,U) at line 30. From function convectionScheme<Type>::New(const fvMesh&, const surfaceScalarField&, Istream&) in file /home/opencfd/OpenFOAM/OpenFOAM2.1.1/src/finiteVolume/lnInclude/convectionScheme.C at line 97. FOAM exiting 

August 29, 2013, 05:06 

#30 
Senior Member
Ehsan
Join Date: Oct 2012
Location: Iran
Posts: 2,186
Rep Power: 16 
it works fine for me!
Code:
Time = 293 smoothSolver: Solving for Ux, Initial residual = 0.00302422, Final residual = 1.63714e05, No Iterations 3 smoothSolver: Solving for Uy, Initial residual = 0.00286406, Final residual = 1.40895e05, No Iterations 3 smoothSolver: Solving for Uz, Initial residual = 0.00163624, Final residual = 9.37947e06, No Iterations 3 GAMG: Solving for p, Initial residual = 0.00816459, Final residual = 4.26288e05, No Iterations 2 time step continuity errors : sum local = 4.67106, global = 1.04718, cumulative = 1602.9 smoothSolver: Solving for epsilon, Initial residual = 0.000209883, Final residual = 1.19376e06, No Iterations 2 bounding epsilon, min: 138.041 max: 2.9235e+08 average: 9.09496e+06 smoothSolver: Solving for k, Initial residual = 0.000215752, Final residual = 8.36107e07, No Iterations 3 ExecutionTime = 1.22 s ClockTime = 1 s Time = 294 smoothSolver: Solving for Ux, Initial residual = 0.00299998, Final residual = 1.35978e05, No Iterations 3 smoothSolver: Solving for Uy, Initial residual = 0.00283594, Final residual = 1.3551e05, No Iterations 3 smoothSolver: Solving for Uz, Initial residual = 0.00161325, Final residual = 8.1245e06, No Iterations 3 GAMG: Solving for p, Initial residual = 0.00804053, Final residual = 1.87376e05, No Iterations 2 time step continuity errors : sum local = 2.05042, global = 1.73826, cumulative = 1604.64 smoothSolver: Solving for epsilon, Initial residual = 0.000211165, Final residual = 1.19876e06, No Iterations 2 smoothSolver: Solving for k, Initial residual = 0.000214596, Final residual = 8.11414e07, No Iterations 3 ExecutionTime = 1.22 s ClockTime = 1 s Time = 295 smoothSolver: Solving for Ux, Initial residual = 0.00269395, Final residual = 1.35094e05, No Iterations 3 smoothSolver: Solving for Uy, Initial residual = 0.00268798, Final residual = 1.34244e05, No Iterations 3 smoothSolver: Solving for Uz, Initial residual = 0.00138372, Final residual = 8.11865e06, No Iterations 3 GAMG: Solving for p, Initial residual = 0.00734547, Final residual = 2.72228e05, No Iterations 2 time step continuity errors : sum local = 2.98289, global = 1.95487, cumulative = 1606.59 smoothSolver: Solving for epsilon, Initial residual = 0.000209892, Final residual = 1.16917e06, No Iterations 2 smoothSolver: Solving for k, Initial residual = 0.000211634, Final residual = 8.11507e07, No Iterations 3 ExecutionTime = 1.23 s ClockTime = 1 s Time = 296 smoothSolver: Solving for Ux, Initial residual = 0.00260183, Final residual = 1.34072e05, No Iterations 3 smoothSolver: Solving for Uy, Initial residual = 0.00259837, Final residual = 1.34191e05, No Iterations 3 smoothSolver: Solving for Uz, Initial residual = 0.00141887, Final residual = 8.04426e06, No Iterations 3 GAMG: Solving for p, Initial residual = 0.00717931, Final residual = 2.6446e05, No Iterations 2 time step continuity errors : sum local = 2.89427, global = 1.88796, cumulative = 1608.48 smoothSolver: Solving for epsilon, Initial residual = 0.000205624, Final residual = 1.19057e06, No Iterations 2 smoothSolver: Solving for k, Initial residual = 0.000209961, Final residual = 7.95193e07, No Iterations 3 ExecutionTime = 1.23 s ClockTime = 1 s Time = 297 smoothSolver: Solving for Ux, Initial residual = 0.00246914, Final residual = 1.34119e05, No Iterations 3 smoothSolver: Solving for Uy, Initial residual = 0.00247703, Final residual = 1.31678e05, No Iterations 3 smoothSolver: Solving for Uz, Initial residual = 0.00133655, Final residual = 8.0358e06, No Iterations 3 GAMG: Solving for p, Initial residual = 0.00733201, Final residual = 2.25581e05, No Iterations 2 time step continuity errors : sum local = 2.47292, global = 1.16714, cumulative = 1609.65 smoothSolver: Solving for epsilon, Initial residual = 0.000209202, Final residual = 1.17054e06, No Iterations 2 bounding epsilon, min: 15.779 max: 2.92343e+08 average: 9.09302e+06 smoothSolver: Solving for k, Initial residual = 0.000209555, Final residual = 8.24086e07, No Iterations 3 ExecutionTime = 1.24 s ClockTime = 1 s Time = 298 smoothSolver: Solving for Ux, Initial residual = 0.00262038, Final residual = 1.38132e05, No Iterations 3 smoothSolver: Solving for Uy, Initial residual = 0.00253905, Final residual = 1.35259e05, No Iterations 3 smoothSolver: Solving for Uz, Initial residual = 0.00141747, Final residual = 8.14806e06, No Iterations 3 GAMG: Solving for p, Initial residual = 0.00717604, Final residual = 2.40071e05, No Iterations 2 time step continuity errors : sum local = 2.62906, global = 0.296388, cumulative = 1609.95 smoothSolver: Solving for epsilon, Initial residual = 0.00020553, Final residual = 1.17951e06, No Iterations 2 smoothSolver: Solving for k, Initial residual = 0.000212137, Final residual = 7.99386e07, No Iterations 3 ExecutionTime = 1.24 s ClockTime = 1 s Time = 299 smoothSolver: Solving for Ux, Initial residual = 0.00262036, Final residual = 1.34373e05, No Iterations 3 smoothSolver: Solving for Uy, Initial residual = 0.00243577, Final residual = 1.31502e05, No Iterations 3 smoothSolver: Solving for Uz, Initial residual = 0.0013605, Final residual = 8.10666e06, No Iterations 3 GAMG: Solving for p, Initial residual = 0.00723721, Final residual = 1.94311e05, No Iterations 2 time step continuity errors : sum local = 2.13106, global = 0.691298, cumulative = 1609.26 smoothSolver: Solving for epsilon, Initial residual = 0.000209559, Final residual = 1.17209e06, No Iterations 2 bounding epsilon, min: 24.6726 max: 2.92349e+08 average: 9.09526e+06 smoothSolver: Solving for k, Initial residual = 0.000210269, Final residual = 8.30651e07, No Iterations 3 ExecutionTime = 1.24 s ClockTime = 1 s Time = 300 smoothSolver: Solving for Ux, Initial residual = 0.00257644, Final residual = 1.3703e05, No Iterations 3 smoothSolver: Solving for Uy, Initial residual = 0.0025284, Final residual = 1.34594e05, No Iterations 3 smoothSolver: Solving for Uz, Initial residual = 0.00143646, Final residual = 8.13869e06, No Iterations 3 GAMG: Solving for p, Initial residual = 0.00720673, Final residual = 2.29444e05, No Iterations 2 time step continuity errors : sum local = 2.51267, global = 1.1237, cumulative = 1608.13 smoothSolver: Solving for epsilon, Initial residual = 0.000206882, Final residual = 1.18584e06, No Iterations 2 smoothSolver: Solving for k, Initial residual = 0.000211105, Final residual = 7.97838e07, No Iterations 3 ExecutionTime = 1.25 s ClockTime = 1 s End
__________________
Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked. 

August 29, 2013, 05:16 

#31  
New Member
Basta
Join Date: Jul 2013
Posts: 28
Rep Power: 3 
I tried also with your folders (0 , constant, system) but I got the same error don't know why
Quote:


August 29, 2013, 05:37 

#32 
Senior Member
Ehsan
Join Date: Oct 2012
Location: Iran
Posts: 2,186
Rep Power: 16 
you use 2.1.1 vesion? download 2.2.0 or 2.2.1 version so that can run.
__________________
Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked. 

August 29, 2013, 19:19 

#33  
New Member
Basta
Join Date: Jul 2013
Posts: 28
Rep Power: 3 
Quote:
I used OpenFoam 2.2 and finally, I didn't have this error. But after launching Paraview, I realised that my problem didn't been solved. Here are the attachement that i got with elements at the interface between the inlet and wall with high pressure ! 

August 30, 2013, 04:46 

#34 
Senior Member
Ehsan
Join Date: Oct 2012
Location: Iran
Posts: 2,186
Rep Power: 16 
why youe mesh is so coarse? use a finer mesh and see if changes.
__________________
Injustice Anywhere is a Threat for Justice Everywhere.Martin Luther King. To Be or Not To Be,Thats the Question! The Only Stupid Question Is the One that Goes Unasked. 

Tags 
nimasam 
Thread Tools  
Display Modes  


Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
Valve simulation with spring  FSI? Help!  farianka  CFX  1  April 17, 2011 18:04 
Simulation of air flow inside valve  FSI? Help!  farianka  Main CFD Forum  0  April 17, 2011 16:30 
Ansys FSI and CFX (valve simulation)  farianka  ANSYS  0  April 17, 2011 16:20 
Terrible Mistake In Fluid Dynamics History  Abhi  Main CFD Forum  12  July 8, 2002 09:11 
Valve Forces in CFdesign  Mike Clapp  Main CFD Forum  3  March 8, 2001 15:09 