|October 24, 2011, 13:42||
shock wave in very high pressure gradients
Join Date: Jan 2010
Posts: 110Rep Power: 8
I want to simulate a shock propagation induced by a very high pressure gradient of inlet and outlet (around 1 Giga Pa).
I am using an explicit solver with first order upwind and with time steps of around 10^(-10) since I just need to model a very short time after shock initiation.
The problem is when this pressure gradient is around 10 MPa, i will have very good results but as I change it to higher pressures, it gives me these errors:
Error > (greater-than): invalid argument : wrong type [not a number]
Error Object: -1.#ind
Error: WorkBench Error: Could not handle event: SolutionStatusUpdate
Error Object: #f
these errors appear after one iteration! does any body have any idea?
is fluent capable of simulating this high pressure gradients?
|October 24, 2011, 14:17||
Join Date: Nov 2010
Location: Busan, South Korea
Posts: 42Rep Power: 8
I'm not kind of expert but...
1. did you checked solution limits?
2. if you reduce under-relaxtion coefficients, it might be...
3. mesh can occur problems
|Thread||Thread Starter||Forum||Replies||Last Post|
|Pulsatile pressure inlet with pressure outlet||a.lynchy||FLUENT||3||March 23, 2012 14:45|
|Pressure Rise Error||emueller||CFX||0||May 5, 2009 11:08|
|Does star cd takes reference pressure?||monica||CD-adapco||1||April 19, 2007 11:26|
|high pressure gas release||ahourri||FLUENT||0||November 17, 2005 00:45|
|Question about the shock wave in CFX software||nucharin||Main CFD Forum||1||January 25, 2005 09:26|