Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Aerodynamics of bicycle wheel and frame
Abstract The pioneering efforts to reduce drag of an aeroplane wheel with spokes is reviewed first. This compilation of early data shows the importance of the shape factor, , i.e. ratio of wheel-to-tyre diameter. Two bicycle wheels having different shape factors are tested. Splitter plates of 2 and 4 length are fitted. Some reduction of drag coefficient is found only for 2 splitter plate. The small effectiveness of splitter plates is attributed to weak vortex shedding from the wheel. The full length splitter plate acting as a disc increases the side-force eleven times in comparison with that of the bare wheel. Similar tests are carried out on a bicycle frame fitted with splitter plates. The drag reduction is found to be marginal. Again it may be argued that vortex shedding from all members of the frame is weak.
Aerodynamics of bicycle wheel and frame
Abstract The pioneering efforts to reduce drag of an aeroplane wheel with spokes is reviewed first. This compilation of early data shows the importance of the shape factor, , i.e. ratio of wheel-to-tyre diameter. Two bicycle wheels having different shape factors are tested. Splitter plates of 2 and 4 length are fitted. Some reduction of drag coefficient is found only for 2 splitter plate. The small effectiveness of splitter plates is attributed to weak vortex shedding from the wheel. The full length splitter plate acting as a disc increases the side-force eleven times in comparison with that of the bare wheel. Similar tests are carried out on a bicycle frame fitted with splitter plates. The drag reduction is found to be marginal. Again it may be argued that vortex shedding from all members of the frame is weak.
Aerodynamics of bicycle wheel and frame
Zdravkovich, M.M. (Autor:in)
13.08.1990
16 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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