Accession Number : AD0665312

Title :   THE MOTION DUE TO A CYLINDER ROTATING IN A STRATIFIED FLUID.

Descriptive Note : Technical rept.,

Corporate Author : JOHNS HOPKINS UNIV BALTIMORE MD DEPT OF MECHANICS

Personal Author(s) : Yaffe,Barry M.

Report Date : JAN 1968

Pagination or Media Count : 122

Abstract : The steady motions set up by a cylinder rotating in a linearly stratified fluid are investigated both theoretically and experimentally. It is observed that the bulk of the flow is horizontal, characterized by a system of jets located at the level of the cylinder and extending out laterally for large distances. Directly adjacent to either of the cylinder flanks, however, the flow is oriented vertically in a relatively thin boundary layer. Separate visco-diffusive theories for the horizontal 'far-field' flow and the vertical 'near-field' flow are developed. By an integral analysis of the entire flow field it is shown that the far-field flow depends on the details of the near-field flow only through a parametric constant representing the difference between the applied viscous torque and the total buoyancy countertorque which opposes this applied torque.

Descriptors :   (*CYLINDRICAL BODIES, FLUID DYNAMICS), THEORY, BOUNDARY LAYER, ROTATION, EQUATIONS OF MOTION, FLOW FIELDS, LAMINAR FLOW, FOURIER ANALYSIS, TEST METHODS

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE