[Suraj Marale]

Hello everybody.

I'm running a steady state simulation about a multiphase flow (air and water).
On CFX - Solver I got this error after 16th iteration:

Parallel run: Received message from slave
-----------------------------------------
Slave partition : 3
Slave routine : ErrAction
Master location : RCVBUF,MSGTAG=1214
Message label : 001100279
Message follows below - :

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| Floating point exception: Overflow |
| |
| |
| |
| |
| |
+--------------------------------------------------------------------+

Parallel run: Received message from slave
-----------------------------------------
Slave partition : 3
Slave routine : ErrAction
Master location : RCVBUF,MSGTAG=1214
Message label : 001100279
Message follows below - :

+--------------------------------------------------------------------+
| ERROR #001100279 has occurred in subroutine ErrAction. |
| Message: |
| Stopped in routine FPX: C_FPX_HANDLER |
| |
| |
| |
| |
| |
+--------------------------------------------------------------------+

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

Do you know which could be my mistake? please help me for this...

Thanks in advannce...

[ghorrocks]

FAQ: http://www.cfd-online.com/Wiki/Ansys...do_about_it.3F

[Suraj Marale]

thanks for reply,

I tried with the different methods which are discussed in that.. but still i am getting the errors.. i might be doing something silly mistake while applying boundry condition .....

[umair64]

hi suraj,,,, i am facing the same problem,,, how you overcome that problem?

[pkladisios]

I, too, have faced that problem several times. Though i am but a beginner i' ll attempt to provide a few pointers. Common causes for that said error is a bad grid, a poorly structured physical problem (irrational boundary conditions) or simply a matter of numerical precision (some problems simply need double precision, tighter convergence criterion or smaller time steps). For instance, at some point i kept getting overflow error at the very first iteration, which led me to believe that it had something to do a parameter or an initial condition. Removing/optimizing a boundary condition solved it. These matters, at least for me , are quite complex and i personally approach them by process of elimination. Also, grid is extremely important and in some cases you should avoid generating a grid automatically. Lastly, you should always check cfx-solver's diagrams to see if and how well your system is converging.

[Steffen595]

if it says slave process failed, sometimes its more happy, when you dont run parallel processes/cores. Just switch to single. Helped me a few times.