Accession Number : AD0751606

Title :   A Study of Flow Fields in Bistable Fluid Amplifiers. Part 2. Analytical Investigation.

Descriptive Note : Technical rept.,

Corporate Author : LEHIGH UNIV BETHLEHEM PA DEPT OF MECHANICAL ENGINEERING AND MECHANICS

Personal Author(s) : Wagner,W. Barry ; Owczarek,Jerzy A.

Report Date : JUN 1972

Pagination or Media Count : 268

Abstract : An analysis was conducted to predict the extent of the total pressure loss regions existing in the corner between the sidewall and horizontal nozzle walls at the exits of planar nozzles having convex contour curvature. The nozzle contours and experimental corner total pressure profiles are described in part I. An analytical model employing a deformable control volume convected by the streamwise flow in the nozzle was formulated. Sidewall boundary layer cross-flow which accumulates in the corner to form the total pressure loss region was assumed to enter the control volume. A large cross-flow solution of the incompressible, three-dimensional, laminar boundary layer equations in bi-polar streamline coordinates was used to predict the sidewall secondary flow as a function of Reynolds number and nozzle shape. (Author)

Descriptors :   (*FLUID AMPLIFIERS, FLOW FIELDS), FLUIDICS, JET MIXING FLOW, COANDA EFFECT, FLOW SEPARATION, NOZZLE GAS FLOW, BOUNDARY LAYER CONTROL, NUMERICAL ANALYSIS

Subject Categories : Fluidics and Fluerics

Distribution Statement : APPROVED FOR PUBLIC RELEASE