"Clarkson, Tom" <[EMAIL PROTECTED]> wrote:
>I am trying to develop some simulation code for HL gliders. My hope is to
>model some real world contest conditions. I hope to uncover which cl's are
>the most important to optimize in an airfoil design. However, I don't have a
>good feel for the "rising" velocity of strong and week thermals or the same
>info for sink. Does anyone have any real data on this?Tom-
Go to www.ssa.org and look for back issues on-line of "soaring". What you want has been done, and I guess fairly accurately. I remember reading and looking at the 3D computer models of convective lift about a year ago. A couple of problems might be getting the actual code parameters, but the author might be willing to help. The other problem is that the studies available don't really model the lift we fly in with HLG's. Technically we utilize "surface layer plumes" for the most part, not what the "big boys" consider thermals. I'm not sure how much it matters, maybe not at all to just measure the effects of delta airmass on CL.
You also might try and contact Scott Jenkins (aka Dr. Wave) he is a fluid dynamics expert who teaches at San Diego State, and is a rabid soaring enthusiast. Find him by calling or emailing www.skysailing.com , that's where he hangs out. He is a great guy, and very helpful.
Prof. J. Roe
Laguna Hills, Ca
When I am weaker than you, I ask you for freedom because that is according to your principles; when I am stronger than you, I take away your freedom because that is according to my principles.
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