CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > OpenFOAM

compressibilty effect in alphaEqn.H

Register Blogs Members List Search Today's Posts Mark Forums Read

Like Tree4Likes

LinkBack Thread Tools Search this Thread Display Modes
Old   May 25, 2012, 08:57
Senior Member
Illya Shevchuk
Join Date: Aug 2009
Location: Darmstadt, Germany
Posts: 176
Rep Power: 16
linch is on a distinguished road
Hi Nima,

Update: I've added 2 rhoEqns, for rho1 and rho2 at the end of my time step. Now I force the continuity of each phase. The drawback is the the EOS is not exactly fulfilled in some interface cells, that caused problems earlier, but I can live with it, since the continuity is more important.

Thanks a lot for the discussion, it helped me a lot. If if you're interested, you can still give me your solver some day, and I could test it with my case. I have a high thermal expansivity of both phases and it may be interesting to know, if your solver still performs well. It must not be now, some day you wish.

Best wishes and a nice weeked!
linch is offline   Reply With Quote

Old   February 20, 2018, 16:30
Default Any references on your work?
Kalpana Hanthanan Arachchilage
Join Date: May 2015
Location: Orlando, Florida, USA
Posts: 30
Rep Power: 11
kal1943335 is on a distinguished road
first need to thank both of you for the valuable discussion and I'm really sorry as I'm trying to refer your work 6 years ago. I'm trying to simulate high pressure gas atomization problem and molten metal is atomizing due to the high pressure gas. The gas inlet is a pressure boundary condition and pressure is in the range of 15-30 atm. However, I tried compressibleInterFoam in OF40 and it crashes with negative temperatures. I know it's due to the sudden expansion of the gas. I tried different solver conditions but still getting the same error. I assume it's a result of taking density as a function of pressure only.

I trying to workout the math to obtain the effect of rho(P,T), following the method described in "A pressure based compressible, two phase flow finite volume method for underwater explotions" by Miller et al. I'm still trying to understand the PEqn.H. However, seems like you to have made some progress on this.

Can you please give me some references of your work so that I can follow.

Thank you.
kal1943335 is offline   Reply With Quote


alpha1, compressibility, continuty, interfoam, mass balance, vof

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
alphaEqn.H in twoPhaseEulerFoam cheng1988sjtu OpenFOAM Bugs 15 May 1, 2016 16:12
Can Flow-3D solve the Joule-Thomson effect? seasoul FLOW-3D 8 December 21, 2011 00:01
Can 'shock waves' occur in viscous fluid flows? diaw Main CFD Forum 104 February 16, 2006 05:44
VOF and strong surface tension effect phsieh2005 Main CFD Forum 1 August 30, 2005 06:56
Iclude particle diameter effect in wall? yueroo FLUENT 0 April 14, 2001 03:56

All times are GMT -4. The time now is 17:39.