CFD study of a windsurf mas/sail geometry

Reventos, Alex (2005). CFD study of a windsurf mas/sail geometry B.Sc Thesis, School of Engineering, The University of Queensland.

       
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Author Reventos, Alex
Thesis Title CFD study of a windsurf mas/sail geometry
School, Centre or Institute School of Engineering
Institution The University of Queensland
Publication date 2005
Thesis type B.Sc Thesis
Supervisor Dr Michael Macrossan
Total pages 108
Language eng
Subjects 290501 Mechanical Engineering
Formatted abstract

Existing theoretical and experimental work relating to two-dimensional mast/sail geometry of yachts is reviewed but no data is found about the windsurf shape. Seven different mast/sail configurations are modelled using the finite-volume package CFDACE. A turbulence module based on the standard k-e model is used over an unstructured triangular mesh, after a validation was done over experimental data.

An air flow with Reynolds number 1.8E6 is simulated over a windsurf sail section of mean line NACA 6-series (a=0.1 CLi=1.4) with and without mast on the leading edge. Three new mast configurations are also tested. The lift and drag coefficients for a varying angle of attack were calculated. However, the results are found to be best presented and best understood by means of graphs driving and heeling force for different angles of attack for a specific downwind course. The maximum driving force is increased by 7.4% over the actual mast used in windsurfing as well as the driving force/heeling force ratio. This ratio is a more accurate indicator of the efficiency of the sail than the typical lift/drag ratio.

Keyword Windserf mast/sail geometry
CFD-ACE
Additional Notes * Mechanical engineering undergraduate theses. Sem 1, 2005

Document type: Thesis
Collection: UQ Theses (non-RHD) - UQ staff and students only
 
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Created: Tue, 30 Apr 2013, 12:31:42 EST by Mr Yun Xiao on behalf of Scholarly Communication and Digitisation Service