期刊
JOURNAL OF WIND ENGINEERING AND INDUSTRIAL AERODYNAMICS
卷 96, 期 6-7, 页码 779-792出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jweia.2007.06.031
关键词
pressure distribution; vortex; flow visualization; boundary layer; aerodynamic force; sphere; horseshoe vortex; plane; ground effect
The flow around a sphere placed at various heights above a plane boundary has been investigated. The diameter of the sphere d was 57 mm, and the Reynolds number based on d was 8.3 x 10(4). The gap between the sphere and the plane varied from 0 to 30 mm. The thickness of the turbulent boundary layer at which the sphere was placed varied from 26 to 120 mm. The flow was visualized by the smoke-wire method and the surface oil-flow pattern method. Behaviors of the flow and vortices were observed during flow visualization. The surface pressure distributions on the sphere and the plane were measured, and the drag and lift coefficients were determined by integrating the surface pressure of the sphere. The drag and lift coefficients of the sphere are defined as empirical equations using dimensionless quantities. (c) 2007 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据