Accession Number : AD0282126

Title :   ASYMMETRIC INVISCID MODES OF INSTABILITY IN COUETTE FLOW.

Corporate Author : BROWN UNIV PROVIDENCE R I DIV OF APPLIED MATHEMATICS

Personal Author(s) : Bisshopp,F. E.

Report Date : JUL 1962

Pagination or Media Count : 21

Abstract : An approximate solution of the equation which governs the inviscid modes of instability of steady flow between concentric rotating cylinders is derived. The problem is treated in the narrow gap approximation, and the solution is applicable over the entire range of opposite rotation rates, but is limited to the treatment of disturbances which are nearly axially symmetric. Numerical results are given for the limiting cases where the ratio of angular velocities of the cylinders approaches zero and minus infinity. It is found that the growth rates of unstable modes, which are very nearly symmetric, are always less than the growth rate of the corresponding axisymmetric mode. (Author)

Descriptors :   *STABILITY, *GAS FLOW, *CYLINDRICAL BODIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE