Method and apparatus for controlled modification of fluid flow

Details Method and apparatus for controlled modification of fluid flow Method and apparatus for controlled modification of fluid flow

1990-12-05

1991-08-20

Chambers, A. Michael

Fluid handling

Processes

Affecting flow by the addition of material or energy

137828, 137830, 137831, F15C 104

Patent

active

050405608

ABSTRACT:
Substantial alteration of the flow conditions in a fluid stream are effected by the application of controlled disturbances to the boundary of or within the stream by one or more piezoelectric actuators. The actuators have resonance frequencies substantially in excess of the unstable frequencies of the stream. The actuators are energized by carrier signals at the resonance frequencies of the actuators, which carrier signals have been modulated at the desired unstable frequency of the stream.

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Bulletin of the American Physical Society, New York, Series II, vol. 34, No. 10, Nov. 1989.

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