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Forum: OpenFOAM Running, Solving & CFD

July 1, 2010, 09:59

Replies: 19

Problem with secondary flow in a square duct

Views: 5,144

Posted By Thomas Baumann

Hi Markus, the residuals of the pressure are...

Hi Markus,

the residuals of the pressure are below 10^-7.
I found out that using divDevReff without the nonlinearStress_-part,

divDevReff =
without: fvc::div(nonLinearStress_)
-...

Forum: OpenFOAM Running, Solving & CFD

June 25, 2010, 14:18

Replies: 19

Problem with secondary flow in a square duct

Views: 5,144

Posted By Thomas Baumann

Hi Markus, I have implemented the turbulence...

Hi Markus,

I have implemented the turbulence model like the other non-linear models in OpenFOAM. I have still the same problems with the velocities to the walls and the pressure.
But simulating a...

Forum: OpenFOAM Running, Solving & CFD

June 18, 2010, 10:14

Replies: 19

Problem with secondary flow in a square duct

Views: 5,144

Posted By Thomas Baumann

Hi Markus, the residuals are good (all of...

Hi Markus,

the residuals are good (all of them < 10e-7).
the simulation of the fully developed channel flow showed velocity changes in y-direction (see the pics above). And because of that,...

Forum: OpenFOAM Running, Solving & CFD

June 16, 2010, 08:13

Replies: 19

Problem with secondary flow in a square duct

Views: 5,144

Posted By Thomas Baumann

Hi Markus, sorry for my late report. It took...

Hi Markus,

sorry for my late report. It took me a long time to implement some new models and share their results with DNS data.

I implemented a ASM from Baglietto and Ninokata "Anisotropic Eddy...

Forum: OpenFOAM Running, Solving & CFD

April 27, 2010, 10:33

Replies: 19

Problem with secondary flow in a square duct

Views: 5,144

Posted By Thomas Baumann

Hi Markus, I have implemented the basic 2d...

Hi Markus,

I have implemented the basic 2d ASM from "An explicit algebraic Reynolds stress model for incompressible and compressible turbulent flows" by Wallin and Johansson. (Equation 1.18, 1.19,...

Forum: OpenFOAM Running, Solving & CFD

April 21, 2010, 10:15

Replies: 19

Problem with secondary flow in a square duct

Views: 5,144

Posted By Thomas Baumann

Hi Markus, at the moment I'm on holiday and...

Hi Markus,

at the moment I'm on holiday and I don't have access to OF. Next week I'll be back and be able to simulate the 2d channel flow and will post the post processing.

Regards Thomas

Forum: OpenFOAM Running, Solving & CFD

April 21, 2010, 06:35

Replies: 19

Problem with secondary flow in a square duct

Views: 5,144

Posted By Thomas Baumann

Hi, I've implemented the basic ASM model...

Hi,

I've implemented the basic ASM model from Gatski ansd Speziale and the normalized one ,too. Papers: On explicit algebraic stress models for complex turbulent flows by Gatski and Speziale...

Forum: OpenFOAM Running, Solving & CFD

April 20, 2010, 10:47

Replies: 19

Problem with secondary flow in a square duct

Views: 5,144

Posted By Thomas Baumann

Hi Markus, I am testing the models at a 2d...

Hi Markus,

I am testing the models at a 2d channel flow now. Have you solved square ducts with ASM's and the secondary flows right-spinning?

I know that changing
-(S_ik*Skj...-0.33*S_kl S_kl...

Forum: OpenFOAM Running, Solving & CFD

April 15, 2010, 04:17

Replies: 19

Problem with secondary flow in a square duct

Views: 5,144

Posted By Thomas Baumann

Hallo Markus, I'm trying to simulate a fully...

Hallo Markus,

I'm trying to simulate a fully developed quare duct, too. I implemented some different EASM models.
But solving a square duct I get the secondary flow near the corners wrong...

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