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    • 2. 发明申请
    • STREAMLINED SURFACE
    • 流动表面
    • WO1993020355A1
    • 1993-10-14
    • PCT/RU1992000106
    • 1992-05-18
    • KIKNADZE, Gennady IraklievichGACHECHILADZE, Ivan AlexandrovichOLEINIKOV, Valery Grigorievich
    • F15D01/12
    • F28F13/02F15D1/005
    • A streamlined surface has concavities (1) (convexities), the cross-section of the concavity (1) (convexity) has the form of a smoothly curved closed line described by a certain relationship, the depth of the concavities (1) (convexities) h=0.005-0.3 of the thickness of the boundary layer, the curved areas (2) of the concavities or convexities have a common tangent in any cross-section transversal to the initial surface with a transitional section (3) in the form of a surface of double curvature with radii /Rcurv1/ >/= 3h and /Rcurv2/ >/= 3h. The size of the concavities (1) (convexities) along the streamlined surface equals D=(2-40)h, the size of the curved area (2) along the streamlined surface is l3=(0.05-0.3)D, the size of the transitional section (3) along the line connecting the centres of the concavities or convexities is ln=(0.05-3)h, and the centres of the concavities (1) or convexities are located in the vertices of a parallelogram with the sides equal to (1.05-4)D and with an angle at the vertex alpha p=20-90 DEG .
    • 流线型表面具有凹部(1)(凸部),凹部(1)(凸部)的截面形状为由一定关系描述的平滑弯曲的闭合线,凹部(1)的深度(凸部 )h = 0.005-0.3的边界层的厚度,凹凸的弯曲区域(2)在与初始表面横截面的横截面中具有共同的切线,其中过渡部分(3)以 具有半径/ Rcurv1 /> / = 3h和/ Rcurv2 /> / = 3h的双曲率曲面。 沿着流线型表面的凹面(1)(凸面)的尺寸等于D =(2-40)h,沿着流线型表面的弯曲区域(2)的尺寸为l3 =(0.05-0.3)D,尺寸 沿着连接凹凸中心的线的过渡段(3)为ln =(0.05-3)h,并且凹面(1)或凸部的中心位于具有侧面的平行四边形的顶点中 等于(1.05-4)D,并且在顶点αp = 20-90°处具有一个角度。