Modeling an Increase in the Lift and Aerodynamic Efficiency of a Thick Gottingen Airfoil with Optimum Arrangement of a Vortex Cell

被引：1
|
作者：
Isaev, S. A. [1 ]
Sudakov, A. G. [1 ]
Usachov, A. E. [1 ]
Kharchenko, V. B. [1 ]
机构：
[1] St Petersburg State Univ Civil Aviat, St Petersburg 196210, Russia
来源：
TECHNICAL PHYSICS LETTERS | 2015年 / 41卷 / 06期
基金：
俄罗斯科学基金会;
关键词：
FLOW; SUCTION;
D O I：
10.1134/S1063785015060061
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The Reynolds equations closed using the Menter shear-stress-transfer model modified with allowance for the curvature of flow line have been numerically solved jointly with the energy equation. The obtained solution has been used to calculate subsonic flow (at M = 0.05 and 5A degrees angle of attack) past a thick (24% chord) Gottingen airfoil with variable arrangement of a small-sized (about 10% chord) circular vortex cell with fixed distributed suction Cq = 0.007 from the surface of a central body. It is established that the optimum arrangement of the vortex cell provides a twofold decrease in the bow drag coefficient Cx, a threefold increase in the lift coefficient Cy, and an about fivefold increase in the aerodynamic efficiency at Re = 10(5) in comparison to the smooth airfoil.
引用
收藏
页码：561 / 564
页数：4
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