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Search: Posts Made By: Amir
Forum: FLUENT October 5, 2011, 16:20
Replies: 42
Views: 7,534
Posted By Amir
Dear Mohammad, I just wanted to show you...

Dear Mohammad,

I just wanted to show you restrictions of your suggestion; but that's not a reason for which I wanted you to be more careful, you completed your suggestion in a relatively long...
Forum: FLUENT October 2, 2011, 12:49
Replies: 42
Views: 7,534
Posted By Amir
Final Shot

Dear Mohammad,

Finally, it's better to take look to the first post of this thread I mentioned above, as you can see, periodic unsteady flow is desired as a general flow, something like flow over...
Forum: FLUENT October 2, 2011, 11:36
Replies: 42
Views: 7,534
Posted By Amir
Dear mohammad, Regardless of these...

Dear mohammad,

Regardless of these discussions which I think that can help other friends, I prefer to recommend easiest procedures because not all of the users are familiar with C programming and...
Forum: FLUENT October 2, 2011, 11:23
Replies: 42
Views: 7,534
Posted By Amir
Dear mohammad, What cheat, look, journal file...

Dear mohammad,
What cheat, look, journal file is not a special thing!!
In another words, think you want to solve this case one time step (1TS) then you change mass flow rate and run another 1TS and...
Forum: FLUENT October 2, 2011, 10:31
Replies: 42
Views: 7,534
Posted By Amir
First of all, I'll try to answer to the post...

First of all, I'll try to answer to the post which may have some valuable information, so I discard momech posts. :rolleyes:

Good idea, it seems that you need more time to understand my suggestion...
Forum: FLUENT October 2, 2011, 06:53
Replies: 42
Views: 7,534
Posted By Amir
Dear Mohammad, I'm very sorry because it seems...

Dear Mohammad,
I'm very sorry because it seems that you got angry of this discussion and you don't want to apologize; just try, it's not very difficult. :cool:
And about this discussion, because I...
Forum: FLUENT October 1, 2011, 12:00
Replies: 42
Views: 7,534
Posted By Amir
Dear Mohammad, We have a general discussion...

Dear Mohammad,

We have a general discussion on appropriateness of two kind of boundary conditions which is available in FLUENT; if we use OpenFOAM, I'll completely agree with you that...
Forum: FLUENT October 1, 2011, 05:49
Replies: 42
Views: 7,534
Posted By Amir
Dear Mohammad, we can analytically show that...

Dear Mohammad,
we can analytically show that pressure BC is not appropriate for fully developed flow because of pressure inlet BC issue. As you know, there shouldn't be any in-plane pressure...
Forum: FLUENT October 1, 2011, 05:23
Replies: 42
Views: 7,534
Posted By Amir
Dear Mohammad, you can easily check it in...

Dear Mohammad,
you can easily check it in FLUENT!!

Bests,
Forum: FLUENT September 30, 2011, 18:10
Replies: 42
Views: 7,534
Posted By Amir
Thanks for changing your idea! :D:cool:

Thanks for changing your idea! :D:cool:
Forum: FLUENT September 30, 2011, 17:58
Replies: 42
Views: 7,534
Posted By Amir
Ok, so we cannot use pressure BC to generate...

Ok, so we cannot use pressure BC to generate fully developed flow. (I checked that)
Forum: FLUENT September 30, 2011, 17:37
Replies: 42
Views: 7,534
Posted By Amir
Dear Mohammad, I'll be glad if you can...

Dear Mohammad,
I'll be glad if you can elaborate these points which may lead to clear this discussion:

As you know, each zero velocity gradient is not necessarily fully developed condition which...
Forum: FLUENT September 30, 2011, 12:36
Replies: 42
Views: 7,534
Posted By Amir
I guess you mean pressure variation @ inlet and...

I guess you mean pressure variation @ inlet and outlet plane not normal to them because obviously we have normal pressure gradient in fully developed flow. Upon your definition of pressure BC, it...
Forum: FLUENT September 30, 2011, 04:51
Replies: 42
Views: 7,534
Posted By Amir
I elaborate it now! In a control volume in...

I elaborate it now!
In a control volume in which block is located in a middle, velocity gradients are zero @ both inlet and outlet and we reach closure for defining boundary condition (both velocity...
Forum: FLUENT September 30, 2011, 02:57
Replies: 42
Views: 7,534
Posted By Amir
Dear Mohammad, That's exactly what I was...

Dear Mohammad,

That's exactly what I was trying to say! In your example, consider a special case; if we consider a control volume in which the block is located in the middle and consequently,...
Forum: FLUENT September 29, 2011, 17:43
Replies: 42
Views: 7,534
Posted By Amir
So, why did you talk about short section?! Or,...

So, why did you talk about short section?! Or, why ability of translational periodic boundary condition with pressure loss is added to FLUENT? (As what you said, it can be easily handled via...
Forum: FLUENT September 29, 2011, 17:19
Replies: 42
Views: 7,534
Posted By Amir
Dear Mohammad, In OpenFOAM, you have to set...

Dear Mohammad,
In OpenFOAM, you have to set boundary conditions for both velocity and pressure, so you've set zeroGradient for velocity @ inlet and outlet and implicitly generate a periodic zone, am...
Forum: FLUENT September 28, 2011, 12:23
Replies: 42
Views: 7,534
Posted By Amir
Hi, The journal files help you to automate...

Hi,
The journal files help you to automate manual procedures. Consider you've set a value for mass flow rate and after one time step you've change the mass flow rate and run for another time step....
Forum: FLUENT September 28, 2011, 09:37
Replies: 42
Views: 7,534
Posted By Amir
First you have to prepare your desired journal...

First you have to prepare your desired journal file, then you can easily read it in FLUENT (file->read->journal)

Bests,
Forum: FLUENT September 27, 2011, 17:07
Replies: 42
Views: 7,534
Posted By Amir
Dear friends, If you cannot hook any UDF for...

Dear friends,

If you cannot hook any UDF for this purpose, you can write a journal file for that.

Bests,
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