发明名称 |
Apparatus and method for reducing drag of a bluff body in ground effect using counter-rotating vortex pairs |
摘要 |
An aerodynamic base drag reduction apparatus and method for bluff bodies, such as tractor-trailer trucks, utilizing a pair of lift surfaces extending to lift surface tips and located alongside the bluff body such as on opposing left and right side surfaces. In a flowstream substantially parallel to the longitudinal centerline of the bluff body, the pair of lift surfaces generate a pair of counter-rotating trailing vortices which confluence together in the wake of the bluff body in a direction orthogonal to the flowstream. The confluence draws or otherwise turns the flowstream, such as the flowstream passing over a top surface of the bluff body, in and around behind a trailing end of the bluff body to raise the pressure on a base surface at the trailing end and thereby reduce the aerodynamic base drag.
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申请公布号 |
US2005206196(A1) |
申请公布日期 |
2005.09.22 |
申请号 |
US20050100201 |
申请日期 |
2005.04.05 |
申请人 |
THE REGENTS OF THE UNIVERSITY OF CALIFORNIA |
发明人 |
ORTEGA JASON M.;SABARI KAMBIZ |
分类号 |
B62D35/00;(IPC1-7):B62D35/00 |
主分类号 |
B62D35/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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