BIFURCATIONS OF TRANSONIC FLOW PAST SIMPLE AIRFOILS WITH ELLIPTIC AND WEDGE-SHAPED NOSES

被引：2

作者：

Kuz'min, A. G. ^{[1
]}

机构：

[1] St Petersburg State Univ, St Petersburg 198504, Russia

来源：

JOURNAL OF APPLIED MECHANICS AND TECHNICAL PHYSICS | 2010年 / 51卷 / 01期

关键词：

airfoil; local supersonic regions; buffet; bifurcations;

D O I：

10.1007/s10808-010-0004-3

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A turbulent transonic flow past two symmetric airfoils with flat midparts is studied numerically. Using the Reynolds-averaged Navier-Stokes equations, we analyze the flow past a 9% thick airfoil with an elliptic nose. A range of the free-stream Mach number M(infinity), in which flow bifurcations occur, is determined. Values of M(infinity) that give rise to significant changes in the lift coefficient with variations of the angle of attack are specified. Flow bifurcations are also revealed for a thin double wedge, i.e., a sort of a hexagon.

引用

页码：16 / 21

页数：6

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