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

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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

Author(s):
Wagner, W. Barry ; Owczarek, Jerzy A.
Author Organization(s):
LEHIGH UNIV BETHLEHEM PA DEPT OF MECHANICAL ENGINEERING AND MECHANICS
Descriptive Note:
Technical rept.,
Supplementary Note:
Report on Fluid Amplifiers. See also AD-751 627.
Pagination:
0268

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
THEMIS-LU-TR-10
Contract/Grant Number(s):
N00014-69-A-0417
 Subject Terms
Communities of Interest:
No COI(s) Identified
Descriptor(s):
(*FLUID AMPLIFIERS, FLOW FIELDS), FLUIDICS, JET MIXING FLOW, COANDA EFFECT, FLOW SEPARATION, NOZZLE GAS FLOW, BOUNDARY LAYER CONTROL, NUMERICAL ANALYSIS
Field(s)/Group(s):
Fluidics and Fluerics
Keyword(s):
BISTABLE FLUID AMPLIFIERS, *FLUERICS, THEMIS PROJECT
Report Date:
1972 Jun 01