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Showing results 1 to 6 of 6 Search took 0.00 seconds. Search: Posts Made By: linnemann

Forum: OpenFOAM August 29, 2011, 06:22

Replies: 15 Wind driven rotation Views: 4,876 Posted By linnemann Nothing related to how you specify the forces. ... Nothing related to how you specify the forces. If there is an error it must be elsewhere. Have you looked at the pressure/velocity contours at the mid plane (z-normal) between the 2D and the 3D...

Forum: OpenFOAM August 29, 2011, 05:09

Replies: 15 Wind driven rotation Views: 4,876 Posted By linnemann If the rotating object rotates about the z-axis... If the rotating object rotates about the z-axis and the z-axis goes through the point (0 0 0) and has the vector (0 0 1) the CofR is (0 0 0) since the forces are calculated in all axis (x,y,z). So...

Forum: OpenFOAM August 29, 2011, 01:50

Replies: 15 Wind driven rotation Views: 4,876 Posted By linnemann Hi When you use the force output it... Hi When you use the force output it calculates the Torque on all three axis so CofR is just to locate the center of the rotating object. If you do not want the forces for each individual blade...

Forum: OpenFOAM August 27, 2011, 14:51

Replies: 15 Wind driven rotation Views: 4,876 Posted By linnemann Hi First of the theta scale on the x-axis is... Hi First of the theta scale on the x-axis is very different? Second you should see some fluctuations similar to the 2D case, thats what I got anyway. Have you checked the timestep and mesh...

Forum: OpenFOAM August 27, 2011, 13:11

Replies: 15 Wind driven rotation Views: 4,876 Posted By linnemann Hi I do not think you made a mistake. ... Hi I do not think you made a mistake. I just did something similar with a NACA0012 3bladed lift VAWT. Simulated it in 2D and got reasonable (not expected) results and a max power output at...

Forum: OpenFOAM August 25, 2011, 14:33

Replies: 15 Wind driven rotation Views: 4,876 Posted By linnemann Hi Im gonna chime in on this. Also... Hi Im gonna chime in on this. Also doing some VAWT simulations myself using transientSimpleDyMFoam and mixerGgiFvMesh. The approach I have used is similar to yours. Consider these input.

Showing results 1 to 6 of 6

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