应用机械工程学报

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Analytical Investigation of Peristaltic Transport of Power Law Fluid through a Tube

Sadeghi K and Jalali Talab H

In this paper, the peristaltic flow of a power law fluid in a cylindrical channel is studied analytically. The governing equations consist of continuity and momentum equations are solved mathematically by perturbation method. The zeroth and first order in amplitude ratio of the stream function is considered for perturbation series. The effects of flow behavior index (n) flow rate and amplitude ratio (ε) on the flow field are investigated. The results show that increment of power law index predicts more flow rate and less pressure rise in peristaltic motion. Trapping phenomenon is form by closed stream line depending on peristaltic motion.