Flow visualization past a hydrophobic surface sphere with a gas-liquid interface

被引：0
|
作者：
Fujita, Takao [1 ]
Watanabe, Keizo [1 ]
机构：
[1] Graduate School of Engineering, Department of Mechanical Engineering, Tokyo Metropolitan University, 1-1 Minami Ohsawa, Hachiooji-shi, Tokyo, 192-0397, Japan
来源：
Nihon Kikai Gakkai Ronbunshu, B Hen/Transactions of the Japan Society of Mechanical Engineers, Part B | 2006年 / 72卷 / 02期
关键词：
Boundary conditions - Drag - Friction - Hydrophobicity - Incompressible flow - Spheres;
D O I：
10.1299/kikaib.72.307
中图分类号：
学科分类号：
摘要：
Drag reduction is achieved by using a hydrophobic surface with fluid slip. Fluid slip is closely related to a gas-liquid interface formed as a solid surface with many fine grooves. The friction generated by the solid boundary is modified considerably because the gas-liquid interface provides a zero-shear stress boundary condition. The purpose of this study is to experimentally clarify flow patterns and drag reduction of a hydrophobic surface sphere by visualizing flow and measuring the drag. The flow visualization results showed that the Vortex Loop was not exist at Re
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页码：307 / 313
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