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Method and apparatus for controlling boundary layer turbulence and turbulence in a fluid flow field adjacent to a wall
Method and apparatus for controlling boundary layer turbulence and turbulence in a fluid flow field adjacent to a wall
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机译：用于控制边界层湍流和与壁相邻的流体流场中的湍流的方法和设备
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摘要
The turbulence of the fluid flow field adjacent to the boundary layer or other wall with the turbulent wall region is controlled. It features a system of roll pairs extending in the direction of flow and a tilted transmission structure that interacts with the system of roll pairs by locally introducing two separate disturbances into the turbulent wall region, This disturbance field is effective in forming a synthetic disturbance field, which is strongly coupled to the tilt-transfer structure in such a way as to increase or decrease the interaction of the transmission structure with the roll-pair system, thereby locally increasing the turbulence of the flow field Or decrease. One of the disturbances may result from the interaction of the fluid with the array of linear strips or strips of delta-shaped protrusions located in the width direction (i.e., transversely to the flow direction) on the wall; The second disturbance can be caused by injecting acoustic energy into the local region.;Moreover, the arrangement of linear strips or airfoil-shaped protrusions can be used to form a pair of counter-rotating rolls to control the turbulence of the boundary layer.
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