TOLLMIEN-SCHLICHTING WAVE PACKET PRODUCED BY A TURBULENT SPOT

被引：58

作者：

WYGNANSKI, I ^{[1
]}

HARITONIDIS, JH ^{[1
]}

KAPLAN, RE ^{[1
]}

机构：

[1] UNIV SO CALIF,LOS ANGELES,CA 90007

来源：

JOURNAL OF FLUID MECHANICS | 1979年 / 92卷 / JUN期

关键词：

D O I：

10.1017/S0022112079000756

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Experimental investigations in the region following the passage of an isolated turbulent spot in a laminar boundary layer reveal the existence of a pair of oblique wave packets. These packets are swept at an angle of approximately 40°, and exhibit frequency and wave speed characteristics in agreement with predictions made for oblique Tollmien-Schlichting waves. No waves exist near the centreline of the spot. Several observations of the breakdown of this ordered motion into a new turbulent spot are shown. This breakdown is accompanied by the appearance of an intense shear layer inclined to the wall. © 1979, Cambridge University Press. All rights reserved.

引用

页码：505 / &

共 26 条

[1]

[Anonymous], 1971, J FLUID MECH

[2] WALL STRUCTURE OF TURBULENT BOUNDARY-LAYER [J].