Peristaltic transport of a Johnson-Segalman fluid in an asymmetric channel

This paper deals with peristaltic flow of a Johnson–Segalman fluid in an asymmetric channel under long-wavelength and lowReynolds number considerations. The channel asymmetry is caused due to the peristaltic wave train on the walls having different amplitudes and phase. A series solution for small Weissenberg number is obtained for the stream function, axial velocity, axial pressure gradient and pressure drop over a wavelength. The effects of various emerging parameters on the flow characteristics are shown and discussed with the help of graphs. c © 2007 Elsevier Ltd. All rights reserved.