Patent ID: 8069910

Claim:
A thermal management system, comprising: a synthetic jet ejector driven by an acoustical resonator having a first pipe; wherein said acoustical resonator operates at one of its resonance frequencies, wherein said acoustical resonator has a plurality of harmonic resonance frequencies f 2 , f 3 , . . . , f n in addition to a primary resonance frequency f 1 , wherein the primary resonance frequency f 1 and the harmonic resonance frequencies f 2 , f 3 , . . . , f n are determined by the length L 1 of the first pipe, and wherein the relationship between the k th resonance frequency f k and the length L 1 is given by f k = ( 2 â¢ k - 1 ) â¢ c 4 â¢ L 1 where c is the speed of sound in the ambient fluid.