空气中非光滑凹坑面减阻性能仿真研究(英文)  

Numerical Simulation and Drag Reduction Performance Analysis of Non-smooth Surface with Dimples in Air

作　　者：董彦非[1] 彭世冲[1] 阴小晖[1] 

机构地区：[1]南昌航空大学飞行器工程学院,南昌330063

出　　处：《系统仿真学报》2014年第6期1191-1196,共6页Journal of System Simulation

基　　金：Aviation Science Funds(2011ZA56001);Postgraduate Innovation Fund(YC2011-S096)

摘　　要：仿生非光滑表面减阻技术有重要研究价值,但目前相关理论不完善。为进一步分析凹坑面在空气中的减阻效果与减阻性能,对一系列半圆与间隔组成的变尺寸凹坑面进行数值计算。结果表明,6个模型中最佳减阻模型在来流速度为6m/s时,减阻率达25.927%,减阻效果明显;最后分析了凹坑尺寸对于凹坑面减阻的影响及减阻规律。Bionic non-smooth surface drag reduction technology, having significant economic value and wide development potential, is still imperfect. In order to analyze the concave surface in air medium flow of the drag reduction effect and performance, numerical simulation was carried on the flowing of non-smooth surface with dimples in air flow. The results show that this kind of non-smooth surface with dimples has a good drag reduction effect for flow velocity ranging from 6m/s to 15m/s. And it has the best reducing ability（25.927%） at a velocity of 6m/s. Finally, the theory of the drag reduction and the impact of the dimples drag reduction factors（size, speed） are analyzed.

关 键 词：减阻 凹坑 空气介质 摩擦阻力 非光滑面 数值模拟 

分 类 号：O357.1[理学—流体力学]