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Forum: OpenFOAM Running, Solving & CFD

August 23, 2014, 10:50

Replies: 5

long period oscillations in simpleFoam results

Views: 3,335

Posted By james.conger

Good thoughts

Thanks for your suggestions. You are right that on average there was a finer resolution on the 2D mesh. Also, I made the 3D mesh much more uniform, which might have contributed to the solution.
...

Forum: OpenFOAM Running, Solving & CFD

August 22, 2014, 19:00

Replies: 5

long period oscillations in simpleFoam results

Views: 3,335

Posted By james.conger

3D simulations avoid the problem

Surprisingly enough, it turns out that 3D simulations under the same conditions usually converge quickly without showing the oscillations. The 3D simpleFoam results show a large eddy behind the...

Forum: OpenFOAM Running, Solving & CFD

March 7, 2014, 11:39

Replies: 5

long period oscillations in simpleFoam results

Views: 3,335

Posted By james.conger

Good idea

I had overlooked that mean value boundary condition. Certainly worth a test.

Many thanks!

Forum: OpenFOAM Running, Solving & CFD

March 5, 2014, 12:52

Replies: 5

long period oscillations in simpleFoam results

Views: 3,335

Posted By james.conger

long period oscillations in simpleFoam results

I have been using simpleFoam to simulate 2D turbulent air flow over sails. This works well for cases where the air flow is roughly parallel to the airfoil (sail) shape. The solutions typically...

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