THE EFFECTS OF SUCTION ON THE NONLINEAR STABILITY OF THE 3-DIMENSIONAL BOUNDARY-LAYER ABOVE A ROTATING-DISK

被引：12

作者：

BASSOM, AP ^{[1
]}

SEDDOUGUI, SO ^{[1
]}

机构：

[1] UNIV BIRMINGHAM,SCH MATH & STAT,BIRMINGHAM B15 2TT,W MIDLANDS,ENGLAND

来源：

PROCEEDINGS OF THE ROYAL SOCIETY OF LONDON SERIES A-MATHEMATICAL PHYSICAL AND ENGINEERING SCIENCES | 1992年 / 436卷 / 1897期

关键词：

D O I：

10.1098/rspa.1992.0026

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

There exist two types of stationary instability of the flow over a rotating disc corresponding to the upper-branch, inviscid mode and the lower-branch mode, which has a triple deck structure, of the neutral stability curve. A theoretical investigation of the linear problem and an account of the weakly nonlinear properties of the lower branch-modes have been undertaken by P. Hall and S. MacKerrell respectively. Motivated by recent reports of experimental sightings of the lower-branch mode and an examination of the role of suction on the linear stability properties of the flow here we investigate the effects of suction on the nonlinear disturbance described by S. MacKerrell. The additional analysis required to incorporate suction is relatively straightforward and enables us to derive an amplitude equation which describes the evolution of the mode. For each value of the suction a threshold value of the disturbance amplitude is obtained; modes of size greater than this threshold grow without limit as they develop away from the point of neutral stability.

引用

页码：405 / 415

页数：11

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