CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums

Search Results

Register Blogs Community New Posts Updated Threads Search

Showing results 1 to 11 of 11
Search took 0.00 seconds. Search: Posts Made By: hyperion
Forum: OpenFOAM Pre-Processing June 11, 2011, 12:50
Replies: 94
Views: 29,263
Posted By hyperion
Hi Ehsan - I have yet another question for you. I...

Hi Ehsan - I have yet another question for you. I didn't see any use of viscosityCoefficient from the properties file in the code. I used the command
"find . | xargs grep viscosityCoefficient" and...
Forum: OpenFOAM Pre-Processing June 6, 2011, 16:16
Replies: 94
Views: 29,263
Posted By hyperion
VHS and MaxwellianThemal

Hi Ehsan - First of all, many thanks to you and your collaborators for dsmcFOAM. Could you explain your use of Bird's eqn. 4.79 in the VHS model. It seems that your equation for sigmaT in birds...
Forum: OpenFOAM Pre-Processing November 18, 2010, 20:00
Replies: 94
Views: 29,263
Posted By hyperion
Hi Marta - I have turned off the resetOnOutput,...

Hi Marta - I have turned off the resetOnOutput, but I still get very low values for rhoN in certain areas even thought the simulation runs for several extra days. What I noticed after looking into...
Forum: OpenFOAM Pre-Processing October 22, 2010, 13:08
Replies: 94
Views: 29,263
Posted By hyperion
Hi Archy - Regarding dsmcRhoN: it seems to be in...

Hi Archy - Regarding dsmcRhoN: it seems to be in units of (1/m^3). Is that correct? If so, I want to obtain the number of particles in each individual cell. Marta has suggested in the past that I can...
Forum: OpenFOAM Pre-Processing October 21, 2010, 16:29
Replies: 94
Views: 29,263
Posted By hyperion
Hi Archy - First, I want to thank you and Marta...

Hi Archy - First, I want to thank you and Marta for all the good work in trying to implement pressure boundaries. When I specify a large velocity at the outlet it seems to have the effect of a vacuum...
Forum: OpenFOAM Pre-Processing October 19, 2010, 16:02
Replies: 94
Views: 29,263
Posted By hyperion
Hi Marta - I have had some success with the...

Hi Marta - I have had some success with the vacuum boundary by setting the outlet normal boundaryU to extremely high values (~2000 m/s) while setting the inlet boundary to something more realistic...
Forum: OpenFOAM Pre-Processing September 29, 2010, 16:16
Replies: 94
Views: 29,263
Posted By hyperion
Hi Marta - I have obtained similar results. I...

Hi Marta - I have obtained similar results. I modified the supersonicCorner tutorial by making a domain of the same size and including a small( r= 5mm) cylindrical nozzle at one end. The outlet side...
Forum: OpenFOAM Pre-Processing September 27, 2010, 05:52
Replies: 94
Views: 29,263
Posted By hyperion
Hi Marta - I just saw your answer regarding the...

Hi Marta - I just saw your answer regarding the rhoN internal field. What I'm trying to calculated is the number of particles per cell, so if I had the cell a similar list as the one you directed me...
Forum: OpenFOAM Pre-Processing September 27, 2010, 05:39
Replies: 94
Views: 29,263
Posted By hyperion
Hi Marta - Thanks for all of your excellent...

Hi Marta - Thanks for all of your excellent answers. I too will continue to try to get a better understanding of how to simulate internal flows more readily. I have has experience with another 2D...
Forum: OpenFOAM Pre-Processing September 24, 2010, 18:38
Replies: 94
Views: 29,263
Posted By hyperion
Hi Marta - Thanks for the response. I am trying...

Hi Marta - Thanks for the response. I am trying to produce a low density jet into a vacuum, and when I try specify temperature and number density at the boundaries I get some odd results. Have you...
Forum: OpenFOAM Pre-Processing September 21, 2010, 14:18
Replies: 94
Views: 29,263
Posted By hyperion
pressure in dsmcFOAM

Hi Chris - I am trying to run a dsmcFOAM and I noticed in your post that you were at one point using pressure based boundary conditions. I was wonder how you implemented these types of conditions....
Showing results 1 to 11 of 11

 
Forum Jump

All times are GMT -4. The time now is 07:17.

Contact Us - CFD Online - Privacy Statement - Top