chapter  29
20 Pages

AFTERBURNING CHARACTERISTICS OF PASSIVELY EXCITED SUPERSONIC PLUMES

AFTERBURNING CHARACTERISTICS OF PASSIVELY

EXCITED SUPERSONIC PLUMES

K.H. Yu and K. C. Schadow

Supersonic afterburning plumes that respond to passive excitation were

experimentally studied to explore the role of initial mixing control in the

modication of the afterburning ame characteristics. The plume ow

eld was simulated with pressured-matched supersonic jets that were

discharged from a Mach 2 nozzle into air. To create passive excitation

in the plume{air shear ow, an open cavity with adjustable geometry

was tted at the nozzle exit setting up ow-induced cavity resonance.