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    • 5. 发明授权
    • Polymer/riblet combination for hydrodynamic skin friction reduction
    • 聚合物/肋组合用于水动力皮肤摩擦减少
    • US5445095A
    • 1995-08-29
    • US892066
    • 1992-05-28
    • Jason C. ReedDennis M. Bushnell
    • Jason C. ReedDennis M. Bushnell
    • B63B1/34B64C21/10B64C23/00B64C1/38
    • B64C23/00B63B1/34B64C21/10B64C2230/20Y02T50/166Y02T70/121
    • A process for reducing skin friction and inhibiting the effects of liquid turbulence in a system involving the flow of a liquid along the surface of a body, e.g. a marine vehicle, includes injecting a drag reducing polymer into the valleys of adjacent, evenly spaced, longitudinal grooves extending along the length of the surface of the body, so that the rate of diffusion of the polymer from individual grooves into the liquid flow is predictably controlled by the groove dimensions. When the polymer has diffused over the tips of the grooves into the near wall region of the boundary layer, the polymer effectively reduces the turbulent skin friction. A substantial drag reducing effect is achieved with less polymer than must be used to lower skin friction when the surface of the body is smooth.
    • 一种用于减少皮肤摩擦并抑制液体湍流在涉及沿着身体表面的液体流动的系统中的方法,例如, 船用车辆包括将减阻聚合物注入沿着主体表面的长度延伸的相邻的,均匀间隔的纵向槽的谷中,使得聚合物从单个槽扩散到液体流中的速率是可预测的 由凹槽尺寸控制。 当聚合物在沟槽的顶端扩散到边界层的近壁区域时,聚合物有效地减少了湍流的表面摩擦。 使用较少的聚合物可以实现显着的减阻效果,而当聚合物的表面平滑时,聚合物比用于降低皮肤摩擦力要小。