Accession Number : ADA332805

Title :   Characterization of Receptivity in Jet Flow Control

Descriptive Note : Final technical rept. May 94-May 97

Corporate Author : MCDONNELL DOUGLAS CORP ST LOUIS MO

Personal Author(s) : Parekh, D. E. ; Cain, A. B. ; Vaporean, C. N.

PDF Url : ADA332805

Report Date : 31 OCT 1997

Pagination or Media Count : 64

Abstract : This report describes a combined experimental and computational investigation of the receptivity of incompressible and compressible jets to acoustic and fluidic perturbations. Receptivity is the mechanism by which external disturbances transfer energy to instabilities in the flow. The focus of this research is characterizing jet receptivity for a broad range of actuator and flow parameters. The numerical computations explore the influence of forcing amplitude, combined harmonic and steady blowing, actuator location, Mach number, and temperature ratio. Experimental investigations compare the effectiveness of various types of actuators and document the flow response to high amplitude forcing by a periodic fluidic actuator.

Descriptors :   *JET FLOW, ENERGY TRANSFER, COMPRESSIBLE FLOW, PERTURBATIONS, ACTUATORS, MACH NUMBER.

Subject Categories : Aerodynamics

Distribution Statement : APPROVED FOR PUBLIC RELEASE