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Forum: OpenFOAM Running, Solving & CFD

February 25, 2008, 05:53

Replies: 4

Random field

Views: 4,061

Posted By johndeas

I corrected my error: yDir was

I corrected my error: yDir was declared of type volVectorField, and, as such, the perturbation had to be written:

U[celli] += devX*xDir+devY*yDir[celli]+devZ*zDir;

instead of:

U[celli]...

Forum: OpenFOAM Running, Solving & CFD

February 19, 2008, 04:17

Replies: 4

Random field

Views: 4,061

Posted By johndeas

I am trying to reproduce resul

I am trying to reproduce results we get on another code (DNS), perturbing a Poiseuille profile with white noise at 1/10 the original local field value.

I noted perturbU and will give it a try...

Forum: OpenFOAM Running, Solving & CFD

February 18, 2008, 13:52

Replies: 4

Random field

Views: 4,061

Posted By johndeas

I tried to modify perturbU fro

I tried to modify perturbU from De Villier :

#include "fvCFD.H"
#include "Random.H"
#include "wallDist.H"
#include "wallDistReflection.H"
#include "mathematicalConstants.H"

// * * *...

Forum: OpenFOAM Running, Solving & CFD

February 18, 2008, 11:03

Replies: 4

Random field

Views: 4,061

Posted By johndeas

Hi, I would like to create

Hi,

I would like to create a random vector field with which I could play with my flow (adding it to velocity components as a white noise, or as a body force in the NS equation,...).

Since I...

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