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Search took 0.00 seconds. Search: Posts Made By: -mAx-
Forum: FLUENT March 26, 2010, 13:58
Replies: 21
Views: 3,744
Posted By -mAx-
Sorry I wanted to say: "You give the massflow...

Sorry I wanted to say:
"You give the massflow at INLET, and fluent computes the pressure at inlet (eg: your drop pressure). Finally your "real" pressure at outlet will be <the pressure inlet you...
Forum: FLUENT March 26, 2010, 13:30
Replies: 21
Views: 3,744
Posted By -mAx-
If you don't know the pressure at your outlet,...

If you don't know the pressure at your outlet, then you set at it at 0. You give the massflow at outlet, and fluent computes the pressure at inlet (eg: your drop pressure). Finally your "real"...
Forum: FLUENT March 26, 2010, 09:28
Replies: 21
Views: 3,744
Posted By -mAx-
without talking about DPM, if you have a...

without talking about DPM, if you have a massflow, then you have a drop pressure.
As your outlet-pressure is fixed (your BC), then the drop pressure will be dp= pressure_inlet - pressure_outlet -->...
Forum: FLUENT March 26, 2010, 04:44
Replies: 21
Views: 3,744
Posted By -mAx-
if you set a velocity at your pressure, the...

if you set a velocity at your pressure, the solver will compute the pressure inlet.
Monitor it, to see if the computed pressure converges or not
Forum: FLUENT March 26, 2010, 04:07
Replies: 21
Views: 3,744
Posted By -mAx-
No the residuals should decrease and then stay...

No the residuals should decrease and then stay constant. But they are not suppose to drop towards.
Monitor the pressure at your inlet, and check its convergence
Forum: FLUENT March 26, 2010, 03:28
Replies: 21
Views: 3,744
Posted By -mAx-
ah ok you are running DPM model. I have...

ah ok you are running DPM model.
I have 0-experience with it, so I won't be helpful from this side.
Sorry.
I would check tutorial about DPM, if one exists...
Forum: FLUENT March 25, 2010, 05:07
Replies: 21
Views: 3,744
Posted By -mAx-
*did you compared the results for iterations =...

*did you compared the results for iterations = 10000, and then for iterations where the residuals drop?
*compressible/uncompressible?
*what kinds of solver/schema/turbulence model
Forum: FLUENT March 25, 2010, 03:55
Replies: 21
Views: 3,744
Posted By -mAx-
-what is the max skewness of your mesh? -what...

-what is the max skewness of your mesh?
-what kind of BC did you used
-is your massflow or pressure at inlet in agreement with your expectations?
etc...
Forum: FLUENT March 25, 2010, 03:12
Replies: 21
Views: 3,744
Posted By -mAx-
*Is your mesh ok? grid/check *check if the...

*Is your mesh ok?
grid/check
*check if the mass continuity is conserved (massflow in = massflow out)
...
It is typical debugging, and it's a part of CFD.
Everybody already had and will have to...
Forum: FLUENT March 25, 2010, 02:01
Replies: 21
Views: 3,744
Posted By -mAx-
No you cannot stop iterating after 1000...

No you cannot stop iterating after 1000 iterations.
If it drops towards, then there is a problem. You have to find why...
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