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February 8, 2012, 04:19 |
Wind turbine simulation problem
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#1 |
New Member
Join Date: Feb 2012
Posts: 19
Rep Power: 14 |
in the velocity vector plot i dont see the vortices that are supposed to be generetad by the fluid flow after a body.the stream lines are a representation with lines of this vortices.isnt it? or im wrong :s ?
I design myself a wind turbine in pro e with some data and studies i found on the internet.the wind velocity is 10 m/s and the rpm are 22.5 So what i did was to put the velocity with a normal velocity inlet and the rotation i did it over the reference frames and the gave rpm. I extracted the turbine from a small circular volumen and then this one from a bigger fluid area. i connected the circular volumen and the fluid volumen with 2 interfaces. the first one the circular front/back is an In place-FAN interface and the second one is the other area and i did it with an In plane-Baffle Interface. Then i said that the turbine region should have an tagential velocity specification method: none and reference frame absolut. im not sure if it works this way for the rotion and the flow from wind. the physics models that im using: 3D,Steady,Ideal Gas,Segregated flow,turbulent,K-epsilon T. and im runing another simulation with Stadard Spalart-Allmaras (eddie). but im not to familiarized with this turbulenz modell. can somebody help me to interpreted this plots i got.i think i have some trouble with the MRF or with the interfaces :s as it where complete separeted from the flow area. no effect from the wind turbine. the wind velocity doesn't changes the value after going through the turbine.is it possible to make that happen? the last pic is how it shoul look like i also wanted to ask something like this is possible with star ccm+ http://www.youtube.com/watch?v=nj_iL8PXOD8 Last edited by sanchovg2; February 8, 2012 at 04:21. Reason: forgott to put pics |
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