Accession Number : AD0616354

Title :   VARIABLE CONDUCTIVITY MFD COUETTE FLOW,

Corporate Author : AEROSPACE RESEARCH LABS WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Cramer,Kenneth R.

Report Date : JAN 1965

Pagination or Media Count : 60

Abstract : Couette flow of a conducting fluid subjected to magnetic and electrical fields is examined for several continuous and discontinuous electrical conductivity profiles to estimate the importance of nonuniform conductivity on the fluid-dynamic variables. The velocity field, flow rate and shear at the moving surface are moderately changed and the shear at the stationary surface is greatly increased as the conductivity becomes more nonuniform. For a given profile, only minor differences occur when less than a fourth of the fluid is nonconducting. The separation pressure can be significantly increased by an external electrical field even when a large portion of the fluid is nonconducting. Stronger magnetic and electrical fields magnify the influence of nonuniform conductivity. Major errors may occur from the assumption of uniform electrical conductivity. (Author)

Descriptors :   (*COUETTE FLOW, ELECTRICAL CONDUCTIVITY), (*ELECTRICAL CONDUCTIVITY, COUETTE FLOW), (*MAGNETOHYDRODYNAMICS, COUETTE FLOW), GRAPHICS, ANALYSIS OF VARIANCE, SHEAR STRESSES, FLUID DYNAMICS, SEPARATION, TEMPERATURE

Distribution Statement : APPROVED FOR PUBLIC RELEASE