Prediction of Pressure Difference for Laminar Bingham Fluid Flow in a Tapered Tube

Abstract

Pressure differences for laminar divergent and convergent flows of Bingham fluid in a tapered tube were studied experimentally. On the basis of the integral energy balance, an equation of pressure difference of Bingham fluid flow was obtained. By introducing a correction factor for characteristic kinetic energy and a generalized Reynolds number, the non-dimensional equation for pressure difference can be written in a form similar to that of Newtonian fluid. The calculation procedure for predicting pressure difference is also shown. The pressure difference calculated from this equation was in good agreement with experimental results. © 1985, The Society of Chemical Engineers, Japan. All rights reserved.