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Search: Posts Made By: SergeAS
Forum: Main CFD Forum May 6, 2016, 12:29
Replies: 4
Views: 1,458
Posted By SergeAS
Hmm...What is your goal in CFD? Even if you...

Hmm...What is your goal in CFD?

Even if you have the source code, the theoretical background in the CFD extremely necessary (ImHO).

Big, but not complete list of the open source CFD codes you...
Forum: SU2 Installation July 6, 2014, 14:18
Replies: 3
Views: 2,734
Posted By SergeAS
According configure --help selected parameter ...

According configure --help selected parameter

--with-MPI=ARG Build parallel version with MPI tools, ARG = MPI C++ compiler

like mpicxx (or [full path]/mpicxx)

Hint: Do not forget make...
Forum: SU2 July 2, 2014, 08:20
Replies: 3
Views: 1,472
Posted By SergeAS
Any MPI code should run on cluster transparently...

Any MPI code should run on cluster transparently without modification.
Forum: SU2 Installation June 22, 2014, 07:56
Replies: 3
Views: 1,630
Posted By SergeAS
1st issue still have yet in SU2v3.2 in 3...

1st issue still have yet in SU2v3.2 in 3 places...patch enclosed
Forum: Main CFD Forum February 7, 2014, 13:41
Replies: 8
Views: 1,159
Posted By SergeAS
Your algorithm is correct, but you keep in mind...

Your algorithm is correct, but you keep in mind that for huge meshes and complicated wall shape this algorithm quite slow. For above specified mesh it will be insignificant, but if you want to...
Forum: Main CFD Forum January 12, 2014, 06:18
Replies: 3
Views: 2,680
Posted By SergeAS
N-S 'Millennium problem' solution has a rather...

N-S 'Millennium problem' solution has a rather indirect relation to CFD

two remarks:

- N-S 'Millennium problem' formulated for the case of an incompressible fluid
- For 2D this problem was...
Forum: Main CFD Forum October 16, 2013, 00:19
Replies: 19
Views: 9,064
Posted By SergeAS
Take a look...

Take a look http://www.openfoamworkshop.org/2012/downloads/Training/ZeljkoTukovic/ZeljkoTukovic-ImmersedBoundarySlides.tgz
Forum: Main CFD Forum October 12, 2013, 17:41
Replies: 26
Views: 2,662
Posted By SergeAS
The grid spacing will influence the stability in...

The grid spacing will influence the stability in terms of how much will interact different BC. For example in the problems of supersonic aerodynamics bow shock wave can interact with the inlet...
Forum: Main CFD Forum October 12, 2013, 16:42
Replies: 26
Views: 2,662
Posted By SergeAS
1) In your case outlet BC should be...

1) In your case outlet BC should be d[rho,U,V,h]/dx=0
2) Negative values ​​of pressure, temperature and density suggest that your solution is unstable, In this case for chosen numerical method I...
Forum: Main CFD Forum October 12, 2013, 14:53
Replies: 26
Views: 2,662
Posted By SergeAS
How changes the pressure in your computation...

How changes the pressure in your computation domain?
At the limit, velocity of the gas must be directed away from areas of high pressure to low pressure. Otherwise you possible mess up signs in...
Forum: Main CFD Forum October 9, 2013, 15:30
Replies: 26
Views: 2,662
Posted By SergeAS
What type of BC you set on the BC2? No-slip wall...

What type of BC you set on the BC2? No-slip wall ?

In the corner points (where there are crossing different BC), I would recommend to set that type of BC (of 2), which imposes more restrictions,...
Forum: Main CFD Forum October 9, 2013, 11:24
Replies: 26
Views: 2,662
Posted By SergeAS
BC1 is Dirichlet BC (all parameters fixed) ...

BC1 is Dirichlet BC (all parameters fixed)

PS: According at the indicated place of occurrence of numerical instability and the character transient of solutions you are likely to have faced with...
Forum: Main CFD Forum October 8, 2013, 05:59
Replies: 12
Views: 3,155
Posted By SergeAS
I'm not familiar with this product, but I do not...

I'm not familiar with this product, but I do not think that the inclusion of the option "conjugate heat transfer" is automatically refine your mesh to y + ~ 1

PS: Take a look...
Forum: Main CFD Forum October 7, 2013, 12:35
Replies: 12
Views: 3,155
Posted By SergeAS
The use of the wall function (as shown on your...

The use of the wall function (as shown on your sketch) for k-eps turbulence model assumes that y+ on the plate is in the range of 30-200, but for heat transfer problems the recommended value of y+ ~...
Forum: Main CFD Forum October 5, 2013, 17:25
Replies: 26
Views: 2,662
Posted By SergeAS
I tried to make a quick analysis of your problem...

I tried to make a quick analysis of your problem in the proposed geometry. I really do not know the parameters that you specified on the BC 1) so there I set the speed of M = 2.5 and the static...
Forum: Main CFD Forum October 5, 2013, 15:25
Replies: 26
Views: 2,662
Posted By SergeAS
Your geometry does not seem to me particularly...

Your geometry does not seem to me particularly difficult, rather it did not accurately represents your original problem with the nozzle. In addition usually in 90% the problems are associated with...
Forum: Main CFD Forum October 4, 2013, 11:06
Replies: 26
Views: 2,662
Posted By SergeAS
Your solution just look does not steady yet....

Your solution just look does not steady yet. It's normal for 1000 iteration with CFL=0.1
Forum: Main CFD Forum June 2, 2013, 12:28
Replies: 3
Views: 951
Posted By SergeAS
Could you give a picture of the initial pressure...

Could you give a picture of the initial pressure distribution and the point where the pressure measurement was performed? Unfortunately I can not read the data in OpenFOAM format.

PS: Build the...
Forum: Main CFD Forum May 31, 2013, 09:46
Replies: 3
Views: 951
Posted By SergeAS
Could you attach simple picture of your case ?

Could you attach simple picture of your case ?
Forum: SU2 May 27, 2013, 04:11
Replies: 3
Views: 1,471
Posted By SergeAS
Which tecplot version are you using ? Older...

Which tecplot version are you using ?

Older versions of tecplot do not understand "NODES=" and "ELEMENTS=" directives in ASCII file. Just try to change directives in to the short form: "N=" and...
Forum: Main CFD Forum April 19, 2013, 10:08
Replies: 6
Views: 1,996
Posted By SergeAS
Which shock-capturing method are you used ? ...

Which shock-capturing method are you used ?

PS: Take a look http://en.wikipedia.org/wiki/Shock_capturing_method
Forum: SU2 Installation January 18, 2013, 06:12
Replies: 3
Views: 1,630
Posted By SergeAS
Two small issues

I found two small issues during building and testing this project

1) If we are using as mpi library the Intel MPI , #includes must be reordered so that mpi.h would be included in the first place ...
Forum: Main CFD Forum December 18, 2012, 13:42
Replies: 23
Views: 2,130
Posted By SergeAS
This is especially sensitive when you need to use...

This is especially sensitive when you need to use in the calculation thousands cores
Forum: Tecplot November 27, 2012, 23:37
Replies: 1
Views: 1,520
Posted By SergeAS
In menu choose Data->Alter->Specify Equations ...

In menu choose
Data->Alter->Specify Equations

Syntax you can found in help
Forum: Main CFD Forum November 9, 2012, 08:06
Replies: 7
Views: 2,221
Posted By SergeAS
Do not forget that the 10-second firing test can...

Do not forget that the 10-second firing test can send to the trash yearly work on your CFD code :)

CFD in R&D is only a small part of the process
Showing results 1 to 25 of 74

 
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