热科学学报（英文版）2003，Vol.12Issue(4)：299-303,5.
A Study of the Vortical Flow over a Delta Wing with a Leading Edge Extension
A Study of the Vortical Flow over a Delta Wing with a Leading Edge Extension
Heuy-Dong Kim 1Young-Ki Lee 1Tae-Ho Kim 1Myoung-Hwan Sohn2
作者信息
- 1. School of Mechanical Engineering, Andong National University, Andong 760-749, Korea
- 2. Department of Aerospace Engineering, Korean Air Force Academy, Chongwon-gun, ChungBook-Do, 363-849, Korea
- 折叠
摘要
Abstract
The present paper describes computational and experimental work on the vortex flow characteristics of a sharp-edged delta wing with a leading edge extension (LEX). Experiment was carried out using a low-speed wind tunnel that has a test section of 3.5 m(W) × 2.45 m(H) × 8.7 m(L). The angle of attack of the delta wing ranges from 10° to 30°. The free stream velocity is fixed at 20 m/s, which corresponds to Reynolds number of 0.88 × 106.Computations using the mass-averaged implicit 3D Navier-Stokes equations were applied to predict the complicated vortical flow over the delta wing. The governing equations were discretized in space using a fully implicit finite volume differencing formation. The standard k-ε turbulent model was employed to close the governing equations. The present computations predicted the experimented flow field with a good accuracy.关键词
delta wing/leading edge extension (LEX)/vortex core/vortex strengthKey words
delta wing/leading edge extension (LEX)/vortex core/vortex strength分类
能源科技引用本文复制引用
Heuy-Dong Kim,Young-Ki Lee,Tae-Ho Kim,Myoung-Hwan Sohn..A Study of the Vortical Flow over a Delta Wing with a Leading Edge Extension[J].热科学学报（英文版）,2003,12(4):299-303,5.
