Endplate effect on aerodynamic characteristics of three-dimensional wings in close free surface proximity

被引：17

作者：

Jung, Jae Hwan ^{[1
]}

Kim, Mi Jeong ^{[1
]}

Yoon, Hyun Sik ^{[2
]}

Pham Anh Hung ^{[1
]}

Chun, Ho Hwan ^{[1
]}

Park, Dong Woo ^{[3
]}

机构：

[1] Pusan Natl Univ, Dept Naval Architecture & Ocean Engn, Pusan, South Korea

[2] Pusan Natl Univ, Global Core Res Ctr Ships & Offshore Plants, Pusan, South Korea

[3] Hyundai Heavy Ind Co Ltd, Maritime Res Inst, Ulsan, South Korea

来源：

INTERNATIONAL JOURNAL OF NAVAL ARCHITECTURE AND OCEAN ENGINEERING | 2012年 / 4卷 / 04期

基金：

新加坡国家研究基金会;

关键词：

Wing in ground; Endplate; Tip vortex; Lift; Drag; AIRFOIL;

D O I：

10.3744/JNAOE.2012.4.4.477

中图分类号：

U6 [水路运输]; P75 [海洋工程];

学科分类号：

0814 ; 081505 ; 0824 ; 082401 ;

摘要：

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.

引用

页码：477 / 487

页数：11

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