Accession Number : AD0740147

Title :   Nonisothermal Swirling Flows in Ducts. Part I,

Corporate Author : OHIO STATE UNIV RESEARCH FOUNDATION COLUMBUS

Personal Author(s) : Murthy,S. N. B. ; Soehngen,Erich E.

Report Date : AUG 1970

Pagination or Media Count : 69

Abstract : An experimental study on swirling flows in cylindrical ducts has been undertaken with and without an axial heat source, and a nearly adiabatic outer wall. The annulus radius ratio is 3.2 and a Reynolds number range is reported. Data are presented for velocity, angular momentum, and flux of total angular momentum along the tube. The friction and heat transfer coefficients are compared to linear flows. An optimum angle of injection and mass flux seems to exist for the least frictional losses and maximum heat transfer though the decay of swirl is measured for that flow.

Descriptors :   (*FLUID FLOW, DUCTS), (*FLOW FIELDS, THERMAL PROPERTIES), VORTICES, COLD FLOW, HEATING, MATHEMATICAL MODELS, WALLS, HEAT TRANSFER, CYLINDRICAL BODIES, STABILITY, FRICTION, ENERGY

Subject Categories : Fluid Mechanics

Distribution Statement : APPROVED FOR PUBLIC RELEASE