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Search: Posts Made By: Amir
Forum: Fluent UDF and Scheme Programming February 15, 2013, 10:58
Replies: 82
Views: 36,532
Posted By Amir
You know, it depends on your case, to be more...

You know, it depends on your case, to be more precise:
- Setting U velocity means: Specific U velocity, Zero lateral velocities
- Setting Symmetry BC means: Zero shear stress, Zero lateral velocity...
Forum: Fluent UDF and Scheme Programming February 15, 2013, 09:02
Replies: 82
Views: 36,532
Posted By Amir
Dear Roberta, 1) Yes, you can hook this UDF...

Dear Roberta,

1) Yes, you can hook this UDF to all three faces (like aerodynamic examples)
2) Your UDF needs few modifications, try this:

#include "udf.h"

#define Uo 1.068 //unit m/s...
Forum: Fluent UDF and Scheme Programming January 4, 2012, 08:14
Replies: 82
Views: 36,532
Posted By Amir
Dear Naimah, I'm not sure it can be done via...

Dear Naimah,

I'm not sure it can be done via ANSYS Design Modeler. I heard mimics software can process these data for importing to grid generator softwares but I don't have further info in this...
Forum: Fluent UDF and Scheme Programming December 30, 2011, 05:29
Replies: 82
Views: 36,532
Posted By Amir
Hi, 1) Maybe you've set the velocity...

Hi,

1) Maybe you've set the velocity magnitude normal to the boundary and FLUENT computes its projections in required direction. I don't think this would be an important issue; this is just an...
Forum: Fluent UDF and Scheme Programming December 9, 2011, 02:54
Replies: 82
Views: 36,532
Posted By Amir
Dear Naimah, In contrast to your belief,...

Dear Naimah,

In contrast to your belief, it's done by simply changing steady to unsteady solver in current case. ;)
I other words, FLUENT uses any data stored in computational domain which can be...
Forum: Fluent UDF and Scheme Programming December 7, 2011, 09:41
Replies: 82
Views: 36,532
Posted By Amir
Ok, if you want to have contours of desired...

Ok, if you want to have contours of desired variables and you haven't run the case ans also use FLUENT 13 or newer, there's an option for transient exporting data @ specified surfaces, but if this is...
Forum: Fluent UDF and Scheme Programming December 7, 2011, 05:28
Replies: 82
Views: 36,532
Posted By Amir
You need to create desired cross-sections for...

You need to create desired cross-sections for post processing; for this purpose, from the surface tab you can select either quadratic or plane that are two different way to create these...
Forum: Fluent UDF and Scheme Programming December 5, 2011, 08:53
Replies: 82
Views: 36,532
Posted By Amir
Dear Naimah, It depends, e.g. if you want to...

Dear Naimah,

It depends, e.g. if you want to have pressure or velocity in a specified point, you can use "solve->monitor->surface ...."; if you didn't activate it before iteration, you have to...
Forum: Fluent UDF and Scheme Programming November 23, 2011, 04:57
Replies: 82
Views: 36,532
Posted By Amir
In UDFs, you have to declare parameter variations...

In UDFs, you have to declare parameter variations via functions, so you can digitize your graph and then find a functions which fit to your discrete data; for this purpose, it's better to fit...
Forum: Fluent UDF and Scheme Programming November 22, 2011, 07:39
Replies: 82
Views: 36,532
Posted By Amir
Hi, you have 2 choices: 1) you can prepare...

Hi,

you have 2 choices:
1) you can prepare a file with special format which defines desires parameter at different time; it this method, you cannot specify spacial variation. (you can find...
Forum: Fluent UDF and Scheme Programming November 17, 2011, 02:40
Replies: 82
Views: 36,532
Posted By Amir
Hi, you can use (file->write->profile) in...

Hi,

you can use (file->write->profile) in your previous results and the use (file->read->profile) in new case. (for more info, refer to manual)

Bests,
Forum: Fluent UDF and Scheme Programming March 21, 2011, 03:36
Replies: 82
Views: 36,532
Posted By Amir
you can use any forms of explicit functions in...

you can use any forms of explicit functions in UDfs.
e.g.:
V_x=V_x(x,y,z),....
Forum: Fluent UDF and Scheme Programming March 21, 2011, 03:01
Replies: 82
Views: 36,532
Posted By Amir
if your inlet velocity profile is obtained from...

if your inlet velocity profile is obtained from another FLUENT calculation, it's easy to handle. else you need to use other post processing softwares like MATLAB or others to fit functions to them...
Forum: Fluent UDF and Scheme Programming March 19, 2011, 08:51
Replies: 82
Views: 36,532
Posted By Amir
Ok, first you should decide what kind of...

Ok,
first you should decide what kind of velocity declaration you want to use.(in B.C. panel) e.g. you can use velocity magnitude normal to plane or setting individual velocity components. without...
Forum: Fluent UDF and Scheme Programming March 18, 2011, 13:07
Replies: 82
Views: 36,532
Posted By Amir
it computes axial velocity magnitude in a...

it computes axial velocity magnitude in a pipe(z-direction) as a function of x & y.
you can also define three UDFs for each velocity components that are similar to above. it depends on the method...
Forum: Fluent UDF and Scheme Programming March 18, 2011, 09:44
Replies: 82
Views: 36,532
Posted By Amir
Hi Wibi, here's a example for fully developed...

Hi Wibi,
here's a example for fully developed flow in a pipe:
#include "udf.h"
#define Q 1.5625e-5 //unit m3/sec
#define Diameter 4.5e-3 //unit m
DEFINE_PROFILE(axialVelocity,t,i)
{
real...
Forum: Fluent UDF and Scheme Programming March 18, 2011, 07:49
Replies: 82
Views: 36,532
Posted By Amir
Hi, refer to DEFINE_PROFILE macro in UDF-manual.

Hi,
refer to DEFINE_PROFILE macro in UDF-manual.
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