Particulate Suspension Flow Induced by Peristaltic Waves in a Non-Uniform Channel

Peristaltic flow of a particle-fluid suspension in a non-uniform channel has been investigated. The coupled differential equations for both the fluid and particle phases have been solved and the expressions for flow rate, pressure rise and friction force have been obtained. It is found that the pressure rise increases with the particle concentration but decreases with the increasing flow rate. The flow characteristic, pressure rise increases indefinitely with increasing amplitude ratio. For any given set of parameters, pressure rise assumes lower magnitude in non-uniform geometry than its corresponding value in the uniform geometry. Friction force possesses the character opposite to that of the pressure rise for any given set of parameters.