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Search took 0.00 seconds. Search: Posts Made By: arjun
Forum: Main CFD Forum January 12, 2012, 07:30
Replies: 33
Views: 16,490
Posted By arjun
I read this paper carefully in the evening and it...

I read this paper carefully in the evening and it seems you are correct, in approach B and C they do interpolate velocity with out rhie chow terms for momentum.

I would try this approach again...
Forum: Main CFD Forum January 11, 2012, 13:56
Replies: 33
Views: 16,490
Posted By arjun
I have pdf form of book from Anil Date so I will...

I have pdf form of book from Anil Date so I will look into it as I get time.

I downloaded this paper though.



At quick glance on this paper says that it also uses rhie chow based velocity...
Forum: Main CFD Forum January 7, 2012, 19:55
Replies: 33
Views: 16,490
Posted By arjun
I am not sure about he changed his mind or not....

I am not sure about he changed his mind or not. The point he pointed out that where-ever fluxes are needed it contained Rhie Chow terms to so that it follows the continuity tightly. This was the...
Forum: Main CFD Forum January 6, 2012, 17:53
Replies: 33
Views: 16,490
Posted By arjun
Interesting you say so, but Mr. Peric himself...

Interesting you say so, but Mr. Peric himself disagree with you. According to Mr. Peric in starccm+ the m+ is used in momentum equation and anyother place where mass flux is required. (This is based...
Forum: Main CFD Forum January 6, 2012, 08:40
Replies: 33
Views: 16,490
Posted By arjun
If you use m to compute Ak and m+ to compute...

If you use m to compute Ak and m+ to compute pressure correction equation, this could only be NO PROBLEM if it means that the mass fluxes used in momentum equation is m and the mass fluxes used in...
Forum: Main CFD Forum January 5, 2012, 17:02
Replies: 33
Views: 16,490
Posted By arjun
These Ak's need mass fluxes as you pointed out...

These Ak's need mass fluxes as you pointed out and the mass fluxes need Rhie chow. Which is what we want to compute from Ak. So it is catch 22. For Ak need Fluxes AND for Fluxes need Ak.
Forum: Main CFD Forum January 5, 2012, 08:11
Replies: 33
Views: 16,490
Posted By arjun
There are two things: 1. If the question is...

There are two things:

1. If the question is that whether you can reconstruct the flux from velocity and pressure ONLY, then the answer is NO.

The thing you guys missed is the variable called...
Forum: Main CFD Forum January 3, 2012, 18:20
Replies: 33
Views: 16,490
Posted By arjun
Yes yes, it is like that. Some variables are set...

Yes yes, it is like that. Some variables are set to single precision and some of them are double precision. But it is not often used in commercial solvers (at least this is what I think). For example...
Forum: Main CFD Forum January 2, 2012, 21:45
Replies: 33
Views: 16,490
Posted By arjun
Update

Here is an update.

Had discussion with mr. Peric about restart problem with starCCM+ (discussion was about lots of things but restart was one of them).

He said that he has not observed the...
Forum: Main CFD Forum December 10, 2011, 19:02
Replies: 33
Views: 16,490
Posted By arjun
I will PM that.

I will PM that.
Forum: Main CFD Forum December 10, 2011, 18:56
Replies: 33
Views: 16,490
Posted By arjun
It is not that they missed the point, it may very...

It is not that they missed the point, it may very well be deliberate. We dump all the fluxes in restart file and this increase the size of file considerably. So for fluent and ccm part it is...
Forum: Main CFD Forum December 10, 2011, 18:44
Replies: 33
Views: 16,490
Posted By arjun
It is true fluent and starCCM+ can not do proper...

It is true fluent and starCCM+ can not do proper restart. In fact , this is one of the issue we have discussed few times with CD Adapco and they have yet to improve. On 14th dec at user conference...
Forum: Main CFD Forum December 5, 2011, 07:47
Replies: 33
Views: 16,490
Posted By arjun
In my knowledge there is only ONE code that could...

In my knowledge there is only ONE code that could stop the calculation and start without any sort of hitch is the one that I wrote for my company. All the other codes including fluent and startccm+...
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