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Forum: OpenFOAM Programming & Development

September 20, 2010, 11:43

Replies: 9

Adding acceleration term in icoDyMFoam

Views: 2,227

Posted By rieuk

Thanks for the reply Su Junwei! So I take it the...

Thanks for the reply Su Junwei! So I take it the first approach is valid but not as implicit as the second approach (with modification to the pressure equation)?

Forum: OpenFOAM Programming & Development

September 18, 2010, 23:07

Replies: 9

Adding acceleration term in icoDyMFoam

Views: 2,227

Posted By rieuk

I notice in dnsFoam the force term is implemented...

I notice in dnsFoam the force term is implemented like so:

fvVectorMatrix UEqn
(
fvm::ddt(U)
+ fvm::div(phi, U)
- fvm::laplacian(nu, U)
...

Forum: OpenFOAM Programming & Development

September 4, 2010, 12:18

Replies: 9

Adding acceleration term in icoDyMFoam

Views: 2,227

Posted By rieuk

Well, with the extra help of an experienced OF...

Well, with the extra help of an experienced OF user I got the following to compile:

scalar Pi = mathematicalConstant::pi;
dimensionedScalar...

Forum: OpenFOAM Programming & Development

September 1, 2010, 18:41

Replies: 9

Adding acceleration term in icoDyMFoam

Views: 2,227

Posted By rieuk

Also, thanks Simon! Will try this asap

Also, thanks Simon! Will try this asap

Forum: OpenFOAM Programming & Development

September 1, 2010, 18:37

Replies: 9

Adding acceleration term in icoDyMFoam

Views: 2,227

Posted By rieuk

Thanks, Ozgur! 1. Agreed about the scalar...

Thanks, Ozgur!

1. Agreed about the scalar pi thing.

2. I don't know I was referring to this thread: http://www.cfd-online.com/Forums/openfoam-solving/60367-rotating-reference-frame.html (3rd...

Forum: OpenFOAM Programming & Development

September 1, 2010, 11:32

Replies: 9

Adding acceleration term in icoDyMFoam

Views: 2,227

Posted By rieuk

Ok....put it this way, 1. How can I create...

Ok....put it this way,

1. How can I create an empty volScalarField with dimensions acceleration?
2. How do I introduce the runtime class into Ueqn.H? (What header file do I need to introduce)
...

Forum: OpenFOAM Programming & Development

August 31, 2010, 10:51

Replies: 9

Adding acceleration term in icoDyMFoam

Views: 2,227

Posted By rieuk

Adding acceleration term in icoDyMFoam

Hey guys, real simple question. My moving reference frame is accelerating -0.5*pi*A*T*sin(2*pi*t/T) in x-dirn and -sqrt(3)/2*pi*A*T*sin(2*pi*t/T) in y-dirn. A, T, pi are constants, t is time. I'm...

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