Accession Number : AD0614738

Title :   ALIGNED-FIELDS MAGNETOGASDYNAMIC WAKES,

Corporate Author : CORNELL UNIV ITHACA N Y GRADUATE SCHOOL OF AEROSPACE ENGINEERING

Personal Author(s) : Fan,D. N.

Report Date : 08 MAY 1964

Pagination or Media Count : 13

Abstract : The effect of compressibility is included in a study of wakes created in two-dimensional, steady, alignedfields, magnetogasdynamic flow past obstacles. The gas is assumed to be viscous, resistive, and thermally conducting. With the Oseen type of approximation as well as the magnetogasdynamic boundary-layer approximation, a great simplification in the formulation of wakes results. The boundary-layer equations, although linearized, still retain the coupling between the velocity, the magnetic, and the temperature fields. The solution of the magnetogasdynamic wake, in general, is a superposition of three individual-wake components, each satisfying a diffusion type of equation. Only one of them is capable of extending upstream. Hence the wake picture is generally characterized by a conventional downstream wake with also the possibility of the existence of an upstream one. To be sure, the general features of the magnetogasdynamic wakes in aligned-fields flows are similar to those of an incompressible fluid; however, the flow now, instead of just being subalfvenic, must be subcritical for the upstream wake to occur. (Author)

Descriptors :   (*MAGNETOHYDRODYNAMICS, WAKE), (*GAS FLOW, WAKE), BOUNDARY LAYER, EQUATIONS, TWO DIMENSIONAL FLOW, DIFFUSION, INCOMPRESSIBLE FLOW, COMPRESSIVE PROPERTIES

Distribution Statement : APPROVED FOR PUBLIC RELEASE