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首页> 外文期刊>International Journal of Naval Architecture and Ocean Engineering >Endplate effect on aerodynamic characteristics of three-dimensional wings in close free surface proximity
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Endplate effect on aerodynamic characteristics of three-dimensional wings in close free surface proximity

机译：终板对靠近自由表面的三维机翼空气动力学特性的影响

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ABSTRACT We investigated the aerodynamic characteristics of a three-dimensional (3D) wing with an endplate in the vicinity of the free surface by solving incompressible Navier-Stokes equations with the turbulence closure model. The endplate causes a blockage effect on the flow, and an additional viscous effect especially near the endplate. These combined effects of the endplate significantly reduce the magnitudes of the velocities under the lower surface of the wing, thereby enhancing aerodynamic performance in terms of the force coefficients. The maximum lift-to-drag ratio of a wing with an endplate is increased 46% compared to that of wing without an endplate at the lowest clearance. The tip vortex of a wing-with-endplate (WWE) moved laterally to a greater extent than that of a wing-without-endplate (WOE). This causes a decrease in the induced drag, resulting in a reduction in the total drag.
机译：摘要我们通过用湍流闭合模型求解不可压缩的Navier-Stokes方程，研究了在自由表面附近带有终板的三维（3D）机翼的空气动力学特性。端板会对流量产生阻塞作用，特别是在端板附近会产生额外的粘性效应。端板的这些综合作用显着降低了机翼下表面下方的速度幅度，从而在力系数方面增强了空气动力性能。与具有最小间隙的不带端板的机翼相比，带端板的机翼的最大升阻比提高了46％。与不带尾板的翼（WOE）相比，带尾板的翼（WWE）的顶涡横向移动的程度更大。这导致感应阻力的减小，导致总阻力的减小。

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