磁流变阀控制行波壁的实验研究  

Experiment Research of Traveling Wavy Wall Controlled by Magnetorheological Fluid Valve

作　　者：张先舟[1] 王奎[2] 吴峰[2] 

机构地区：[1]中科院材料力学行为与设计重点实验室 [2]中国科学技术大学力学与机械工程系,安徽合肥230027

出　　处：《实验力学》2005年第2期253-258,共6页Journal of Experimental Mechanics

基　　金：国家自然科学基金资助项目(10072060)

摘　　要：对于在流体中运行的航行器,为了降低能量消耗和提高运行速度,减少流体的阻力至关重要。由于理论上可以将阻力降为零,行波壁减阻受到了广泛关注。但是目前所有的行波壁都是使用复杂的机械装置实现,因为这些机构体积大,耗能多而且不能适应不同的航行器的外形表面,所以难以应用于实际的航行器。本文中设计并制造了使用磁流变阀控制的二维行波壁,并且将样机在水槽中进行了实验研究。发现当C/U为0.309时,在波谷处可以形成稳定的涡。这种系统结构简单并可以布置在任意形状的表面上。该研究为行波壁在实际航行器上的应用提供了可行性。When the aircraft run in the fluid, it is very important to reduce the fluid′s resistance for lowering the energy wastage and for increasing the speed of aircraft. The traveling wavy wall has been regarded as a kind of advisable method because it can decline the resistance to zero theoretically. But current traveling wavy walls all use the complicated machinery devices, which are difficult to be applied in an actual aircraft because they are too large and consume too much power. Furthermore, they cannot fit for the complicated shapes of aircraft′s surface. In this paper, a two-dimensional traveling wavy wall system controlled by magnetorheological fluid valve was designed and made. This system was plugged into a testing flume. After a series of experiments, it is found the stable vortices stayed in the trough when the C/U is about 0.309. This kind of system has the simple construction and can be arranged on different shapes of surface. This research provides the possibility to apply the traveling wavy wall on the actual aircraft.

关 键 词：行波壁 磁流变液阀 控制实验 减阻方式 涡流 

分 类 号：O357.1[理学—流体力学]