NUMERICAL SIMULATION AND EXPERIMENTAL STUDY OF DRAGREDUCING SURFACE OF A REAL SHARK SKIN

作     者：ZHANG De-yuan LUO Yue-hao LI Xiang CHEN Hua-wei 

作者机构：School of Mechanical Engineering and Automation Beihang University Beijing 100191 China 

出 版 物：《Journal of Hydrodynamics》 (水动力学研究与进展B辑（英文版）)

年 卷 期：2011年第23卷第2期

页      面：204-211页

核心收录：

学科分类：12[管理学] 120203[管理学-旅游管理] 1202[管理学-工商管理] 080704[工学-流体机械及工程] 080103[工学-流体力学] 08[工学] 0807[工学-动力工程及工程热物理] 0801[工学-力学（可授工学、理学学位）] 

基　　金：Project supported by the National Natural Science Foundation of China (Grant No. 50775006) the National High Technology Research and Development Program of China (863 Program, Grant No. 2009AA043802) 

主　　题：numerical simulation experimental study biomimetic surface shark skin drag reduction mechanism 

摘      要：It is well known that shark skin surface can effectively inhabit the occurrence of turbulence and reduce the wall friction, but in order to understand the mechanism of drag reduction, one has to solve the problem of the turbulent flow on grooved-scale surface, and in that respect, the direct numerical simulation is an important tool. In this article, based on the real biological shark skin, the model of real shark skin is built through high-accurate scanning and data processing. The turbulent flow on a real shark skin is comprehensively simulated, and based on the simulation, the drag reduction mechanism is discussed. In addition, in order to validate the drag-reducing effect of shark skin surface, actual experiments were carried out in water tunnel, and the experimental results are approximately consistent with the numerical simulation.