|June 10, 2012, 14:46||
advice on wind turbine simulation?
Join Date: Oct 2011
Posts: 7Rep Power: 5
Hello CFD community,
i am a bit clueless with my wind turbine simulation which i have to do for a universityproject... After reading a lot in the Ansys documentation and on the internet (and this forum in particularly) i created a simlation as follows (see also first picture):
- 2 domains, one stationary and one rotational
- the blade is cut out of the inner domain and the generated faces are defined as wall
- inner domain is rotating to get a realistic airvelocity at the rotating blade (increasing to the tip)
- domains are connected with a frozen rotor interface
- the rotational periodicity is generated as a rotational periodicity interface
The results i get are a bit confusing and i guess that i made a general designmistake. If you look at the results (picture 2 and 3) you can notice a very abrupt change of the velocity between the two domains. I would have expected a steady distribution in the whole designspace.
Can you give me an advice how i have to change the flow analysis to get a realistic solution?
My first guess is that i made a mistake in geometry. My blade is also rotating, because it is a part of the inner domain. Actually i wanted to create a stationary blade and a rotating domain round this airfoil to get the velocitydistribution. Should i use 2 domains and a rigid body (blade) which overlaps the inner domain??! I tried this approach, but i couldn't create a mesh with a prism layer because of the overlap of the domain and blade...
Your help is apprecited a lot!
|June 10, 2012, 18:53||
Try to plot the velocity in stn frame. This variable (velocity) is the relative velocity caused by the rotation of the rotating domain relative to a stationary observer.
Mechanical Engineer, PhD candidate
|Thread||Thread Starter||Forum||Replies||Last Post|
|simulation on wind turbine...||qiba123||NUMECA||1||May 27, 2012 21:47|
|2D Simulation of Savonius Wind Turbine||ravindersingh||FLUENT||4||December 9, 2011 14:00|
|3D simulation of wind turbine in Yaw wind(in a lateral wind)||mohammad||Main CFD Forum||0||December 28, 2010 04:26|
|Wind Turbine simulation||Bharat||FLUENT||0||August 18, 2005 04:38|
|wind turbine aerodynamics||bharat||Main CFD Forum||1||November 29, 2004 12:26|