The effect of a synthetic jet on heat transfer rates in forced convection of water in micro-channels has been studied numerically. Unsteady computations of laminar flow have been performed for a two-dimensional micro-channel, 200μm high and 4.2 mm long, open at either end with the top surface hot and all other solid wall adiabatic. The orifice width was 50μm, while the length of the orifice passage was 100μm. The diaphragm was assumed to oscillate sinusoidally in time and parabolically in space. The effectiveness of the proposed cooling procedure has been evaluated by comparing the heat transfer rates with and without the synthetic jet. A maximum heat transfer enhancement of approximately 125% was achieved.
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