Nonlinear acoustic oscillations in swirling gas flows

被引：3
|
作者：
Visheratin, K. N. [1 ]
Kalashnik, M. V.
机构：
[1] Specient & Ind Union Typhoon, Obninsk 249038, Kaluga Oblast, Russia
来源：
FLUID DYNAMICS | 2014年 / 49卷 / 04期
基金：
俄罗斯基础研究基金会;
关键词：
gasdynamics; swirling flows; isentropic flows; acoustic oscillations; Ranque tubes;
D O I：
10.1134/S0015462814040139
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
A class of exact solution of the gasdynamics equations with the linear dependence of the velocity components on the coordinates and a functional arbitrariness in the density (entropy) distribution is constructed. Using this class the characteristics of acoustic oscillations occurring, when a swirling gas flow deviates from the steady cyclostrophic equilibrium regime, that is, the equilibrium between the pressure gradient and the centrifugal force, are studied. An expression for the fundamental oscillation frequency agreeing with the measurements is derived.
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页码：530 / 539
页数：10
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