Lorentz力的大小和作用位置对翼型绕流及升力和阻力的影响  

Effects of magnitude and exerting location of Lorentz force on hydrofoil wake

作　　者：陈耀慧 张辉[1] 范宝春[1] 李鸿志[1] 

机构地区：[1]南京理工大学瞬态物理实验室,南京210094

出　　处：《空气动力学学报》2010年第3期345-352,共8页Acta Aerodynamica Sinica

摘　　要：分布在弱电介质溶液中的电磁力(Lorentz力),可以有效地控制边界层的流动,且Lorentz力的大小、方向以及作用位置可根据实际需要来调整。在转动水槽中,通过示踪粒子流场显示以及升力和阻力的测试,对Lorentz力对翼型绕流以及升力和阻力的影响进行了实验研究,并利用拟压缩方法数值求解贴体坐标中的控制方程,对实验中的相应问题进行数值研究。基于实验和计算结果,对电磁力控制时的Lorentz力的大小以及作用位置对翼型绕流和升、阻力的影响及其内在原因进行了讨论。The Lorentz force generated in the low-conducting fluid can be used to control the＇ boundary layer effectively. The magnitude, direction and action location of the Lorentz force that generated in the lowconducting fluid can be adjusted according actual demand. We carried out experimental study the influence of Lorentz force on lift and drag when it acted on the leeward side of hydrofoil though flow visualization which was revealed by the trace particle and testing the lift and drag in a rotating annular tank. The corresponding problems in the experiment were numerical studied by using the artifical compressible method to solve the governing equations in the body-fitted coordinate. The effect of Lorentz＇s magnitude and location on lift and drag and the inherent reason which leading to variation of lift and drag were discussed based on the experimental and numerical result.

关 键 词：电磁力 翼型绕流 流体控制 

分 类 号：O361[理学—流体力学]