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-   -   'Von Karman Vortex Street' Modelling (http://www.cfd-online.com/Forums/main/95418-von-karman-vortex-street-modelling.html)

zedik December 16, 2011 12:11

'Von Karman Vortex Street' Modelling
 
Hello!

Could you please give me an advise.

I would like to solve this problem numerically by myself ('Von Karman Vortex Street' modelling).

Where is it possible to find a most clear explanation how to do it?

What is a boundary conditions and etc.

I need an explanation/description sufficient to write the program on any programming language.

Ideally I want to obtain a movie like this:
http://www.youtube.com/watch?v=0z_hF...ature=youtu.be

Thank you in advance!

k_k December 16, 2011 13:01

You have to try and program a Incompressible N-S solver. You can find source codes of simple 2D incompressible NS solvers developed for lid driven cavity problem in many standard text books. The numerical algorithm, boundary conditions, visualisation etc can be also found. That can be easily extended to your problem of interest.

Here is an example for such solvers,
http://www-math.mit.edu/cse/codes/mi...vierstokes.pdf

zedik December 27, 2011 13:12

Thank you!
I am trying to cope with this code. It's written in the beginning of chapter 4:

'The general approach of the code is described in Section 6.7 in the book Computational Science and Engineering [4]'

I tried to find this one. Do you know, which method was used?
It seems to be well known method for professionals, but I am a beginner.
Where I can find more explanations how it has been done?
I mean these three stages:
1. Treat nonlinear terms.
2. Implicit viscosity
3. Pressure correction.
There are separate equations for
-(U^2)x - (UV)y and 1/Re * (Uxx + Uyy), Nonlinear terms are treated explicitly and the viscosity terms are treated implicitly and etc..

I see what's going on (in the paper) but I don't know why and how.
I need a general explanation for this (exactly for this appr., which is in this paper) approach/scheme.

Could you please write where is it possible to find?

Thank you in advance!

PS: I FOUND AN ANSWER, THIS IS A PRESSURE-CORRECTION SCHEME, BUT I CAN'T DELETE THIS POST

kid December 29, 2011 02:40

hello
 
hi ,
Would you consider using OpenFOAM for this?
If
yes
then i could be of your help.

Regards,
kid

zedik December 30, 2012 14:30

hi
Yes, it would be great.


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