کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1726795 1520766 2009 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Downwind sail aerodynamics: A CFD investigation with high grid resolution
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی دریا (اقیانوس)
پیش نمایش صفحه اول مقاله
Downwind sail aerodynamics: A CFD investigation with high grid resolution
چکیده انگلیسی

A computational fluid dynamics (CFD) code was applied to an America's Cup Class Yacht to investigate sailing performance in a downwind configuration. Apparent wind angles at 45°, 105° and 120° are reported, sailed with mainsail and asymmetrical spinnakers. Numerical results are in good agreement with wind tunnel data. A large mesh investigation was performed, ranging from 60,000 elements up to 37 million elements, which shows a converging trend to the experimental values with differences smaller than 3% in both lift and drag. The most commonly used turbulence models in sail applications were tested and the results are presented here in two meshes with 1 million elements and 6.5 millions, respectively. All turbulence models over-estimate forces more than solving the Navier–Stokes system without any additional equations, hence turbulence models do not increase solution accuracy according to these results.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ocean Engineering - Volume 36, Issues 12–13, September 2009, Pages 974–984
نویسندگان
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