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An experimental study is conducted to understand the acoustic characteristics of a nonuniform area resonator based acoustic pump. Higher peak pressure amplitudes can be obtained by employing a nonuniform resonator instead of a uniform resonator. Peak pressures of the order of a few kilo-pascals were obtained for the available driving power. The pressure obtained has an oscillatory nature with mean equal to the ambient pressure. Extraction of useful energy from the resonator calls for some kind of rectifying mechanism. The frequency of operation of the pump is of the order of 1 kHz, which limits the use of valves with moving components. No moving part valves (also known as ‘dynamic passive valves’) are used for rectification, since they are more reliable and safe to operate. Performance of the acoustic pump is evaluated based on the peak pressure and the flow rate obtained. Performance is evaluated against varying driving power amplitude for different valve configurations.
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