getting effective angle of attack from 3D VLM computation
08-13-2010 | 03:30 AM
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From: , SPAIN
getting effective angle of attack from 3D VLM computation
Hello,
New here; I am currently using AVL (<meta http-equiv="content-type" content="text/html; charset=utf-8" />http://web.mit.edu/drela/Public/web/avl/) a vortex lattice method to look at 3D wind performance. I would like to extract data from there to look at section performance. I thought I could extract the effective angle of attack using the downwash angle but i doesnot appear to be so easy. In there I'd expect to see
effective angle of attack=geometrical angle of attack - downwash angle
however when doing that CL should be equal to 2*pi*effective angle of attack (or very close to).
which is not...<br type="_moz" />
New here; I am currently using AVL (<meta http-equiv="content-type" content="text/html; charset=utf-8" />http://web.mit.edu/drela/Public/web/avl/) a vortex lattice method to look at 3D wind performance. I would like to extract data from there to look at section performance. I thought I could extract the effective angle of attack using the downwash angle but i doesnot appear to be so easy. In there I'd expect to see
effective angle of attack=geometrical angle of attack - downwash angle
however when doing that CL should be equal to 2*pi*effective angle of attack (or very close to).
which is not...<br type="_moz" />
08-13-2010 | 07:42 PM
#2
RE: getting effective angle of attack from 3D VLM computation
Welcome to the RCU forums!
Did you try contacting the authors?
Authors:
Mark Drela, drela (AT) mit (DOT) edu
Harold Youngren, guppy (AT) maine (DOT) rr (DOT) com
Did you try contacting the authors?
Authors:
Mark Drela, drela (AT) mit (DOT) edu
Harold Youngren, guppy (AT) maine (DOT) rr (DOT) com
