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Exact solutions of Rayleigh's equation and sufficient conditions for inviscid instability of parallel, bounded shear flows 13; 13;

IR@NAL: CSIR-National Aerospace Laboratories, Bangalore

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Title Exact solutions of Rayleigh's equation and sufficient conditions for inviscid instability of parallel, bounded shear flows 13; 13;
 
Creator Srinivasan, Radhakrishnan
 
Subject Fluid Mechanics and Thermodynamics
 
Description Sufficient conditions are obtained for the inviscid instability of a general class of plane parallel shear flows. First, Rayleigh's equation is converted into a nonlinear integral equation for the basic velocity profile, and sufficient conditions are then deduced for the existence and uniqueness of solutions to this integral equation, subject to appropriate homogeneous boundary conditions on the eigenfunction theta(y). The velocity profiles U(y) so derived are guaranteed to be unstable. The paper also describes a method for obtaining a general class of new exact neutrally stable solutions of Rayleigh's equation. An example is presented of a class of neutrally stable solutions for jetlike profiles on an unbounded domain.
 
Publisher Birkhauser Verlag AG
 
Date 1994-07
 
Type Journal Article
PeerReviewed
 
Identifier Srinivasan, Radhakrishnan (1994) Exact solutions of Rayleigh's equation and sufficient conditions for inviscid instability of parallel, bounded shear flows 13; 13;. Zeitschrift fuer angewandte Mathematik und Physik, 45 (4). pp. 615-637. ISSN 0044-2275
 
Relation http://nal-ir.nal.res.in/2872/