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Mechanism analysis and numerical simulation of special type of no-moving-part valve piezoelectric pump |
HE Xiu-hua, JIANG Quan-ying, ZHANG Rui |
School of Energy and Power Engineering, Jiangsu University, Zhenjiang, Jiangsu 212013, China |
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Abstract A special type of no-moving-part valve was introduced.The diffuser efficiency at different inlet velocity was obtained by numerical simulation.It was found that the diffuser efficiency of the special type of no-moving-part valve was higher than that of diffuser valve.The flow field of piezoelectric pump is divided by means of dynamic mesh,and UDF programmer was inputted to express the motion mode of piezoelectric membrane,which was transferred into FLUENT software,and then solid-liquid coupled simulation was done.Flow characteristic at different vibration modals was given.It was verified that piezoelectric pump has a better fluidity when the pump membrane near the first order vibration modal.It is correct and feasible to use the dynamic mesh model to the numerical simulation of piezoelectric pump.
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Received: 08 August 2013
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