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Valveless pumping using a two-stage impedance pump

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Impedance pump is defined as a type of valveless pumping mechanism, where an elastic tube is joined with a tube of different impedance, a periodic asymmetrical compression on part of the elastic tube will produce a unidirectional flow. Numerical and experimental studies had been conducted in the past, but little experimental work was found to exploit the principle of multi-stage impedance pumping for fluid transportation. This paper concentrates on the fluid behavior for an open-loop two-stage system experimentally. The aim of this work is to have an insight on the deliverable head and pumping rate of an open-loop two-stage impedance pumping system. This paper generally investigates the effect of different parameters towards the generation of unidirectional flows and composite flow of two opposite directions. Results obtained are of significant values.

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Correspondence to V. C. -C. Lee.

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Lee, V.C.C., Abakr, Y.A. & Woo, K.C. Valveless pumping using a two-stage impedance pump. Front. Mech. Eng. 8, 311–318 (2013).

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