Title: Numerical study on fluid-flow characteristics of peristaltic pump

Authors: Kazuya Tatsumi, Yusaku Matsunaga, Yuichi Miwa, Kazuyoshi Nakabe

Addresses: Department of Mechanical Engineering and Science, Kyoto University, Kyoto 606-8501, Japan. ' Denso Corporation, Kariya, Aichi 448-8661, Japan. ' Department of Mechanical Engineering and Science, Kyoto University, Kyoto 606-8501, Japan. ' Department of Mechanical Engineering and Science, Kyoto University, Kyoto 606-8501, Japan

Abstract: Flow characteristics in a peristaltic pump, which can be applied to Micro Total Analysis Systems (μ-TAS), were numerically investigated. For the present computational analysis, we assumed a simple sinusoidal wave pattern to simulate the peristaltic motion of flexible channel wall and applied the Immersed Boundary method to the treatment of the wall boundary. The effects of the parameters such as the amplitude and velocity of the peristaltic motion upon the flow characteristics and pump performance were evaluated in the present paper. Saw-toothed or trapezoidal wall patterns were also calculated to examine the potentiality of the pumping flow rate increase.

Keywords: peristaltic wall motion; micro pumps; numerical simulation; pump performance; wave amplitude; wave velocity; peristaltic pumps; fluid flow; pumping flow rate.

DOI: 10.1504/PCFD.2009.024817

Progress in Computational Fluid Dynamics, An International Journal, 2009 Vol.9 No.3/4/5, pp.176 - 182

Published online: 01 May 2009 *

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