Journal
APPLIED MATHEMATICS AND MECHANICS-ENGLISH EDITION
Volume 35, Issue 4, Pages 469-480Publisher
SHANGHAI UNIV
DOI: 10.1007/s10483-014-1805-8
Keywords
peristalsis; couple stress fluid; porous medium; mechanical efficiency; trapping
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Investigation concerning peristaltic motion of couple stress fluid is made. An incompressible couple stress fluid occupies the porous medium. Mathematical analysis is presented through large wavelength and low Reynolds number. Exact analytical expressions of axial velocity, volume flow rate, pressure gradient, and stream function are calculated as a function of couple stress parameter. The essential feature of the analysis is a full description of influence of couple stress parameter and permeability parameter on the pressure, frictional force, mechanical efficiency, and trapping.
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