公开(公告)号：US5595205A

公开(公告)日：1997-01-21

申请号：US586423

申请日：1996-01-16

申请人： Lawrence Sirovich ,  Evgene Levich ,  Lucien Y. Bronicki

发明人： Lawrence Sirovich ,  Evgene Levich ,  Lucien Y. Bronicki

IPC分类号： F15D1/02 ,  B64C21/10 ,  F15D1/00 ,  F15D1/12 ,  F15C1/04

CPC分类号： F15D1/12 ,  B64C21/10 ,  B64C2230/02 ,  Y02T50/166 ,  Y10T137/0391 ,  Y10T137/2196 ,  Y10T137/2224

摘要： Turbulence is controlled in boundary layer or wall-bounded fluid flow fields having a turbulent wall region characterized by a system of roll pairs extending in the direction of flow, and obliquely propagating structures interacting with the system of roll pairs, by locally introducing into the turbulent wall region two separate disturbances that are effective to produce, in a local region, a composite disturbance field that is strongly coupled to and modifies the obliquely propagating structures in a manner that increases or decreases the interaction of the propagating structures with the system of roll pairs thereby locally increasing or decreasing the turbulence in the flow field. One of the disturbances may result from the interaction of the fluid with a linear strip, or an array of strips, of delta-shaped protrusions positioned spanwise on the wall (i.e., transverse to the flow direction); and the second disturbance may result from injecting sonic energy into the local region. Furthermore, a linear strip or an array of airfoil shaped protrusions can be used for producing a pair of counter rotating rolls for controlling turbulence in the boundary layer.

摘要翻译： 在边界层或壁面流体流场中控制湍流，其具有湍流壁区域，其特征在于在流动方向上延伸的辊对系统，以及与辊对系统相互作用的倾斜传播结构，通过局部引入湍流 有效地在局部区域中产生复合扰动场，该复合扰动场强制耦合到并且以增加或减少传播结构与卷对系统的相互作用的方式来改变倾斜传播结构 从而局部地增加或减少流场中的湍流。 干扰之一可能是由流体与管壁上的横向方向（即横向于流动方向）的三角形突起的线性条带或条带阵列相互作用产生的。 并且第二个扰动可能是由于将声波注入到本地区域。 此外，可以使用线性条或翼型突起的阵列来制造用于控制边界层中的湍流的一对反转辊。