Viscoelastic fluid flow over a continuous stretching surface with mass transfer

Abstract

The study of boundary layers over a continuous moving or stretching surface is important in several engineering processes. For example, materials manufactured by extrusion processes and heat treated materials travelling between a feed roll and a wind-up roll or on conveyor belts have the characteristics of a continuous moving or stretching surface. Sakiadis [1] and Crane [2] were probably the first to study the boundary layer flow over a continuously moving or a stretddng surface in an ambient fluid. This boundary layer flow is quite different from the boundary layer flow over a stationary semi-infinite plate in a fluid with a. free stream. Since then, several authors [3-8] have studied various aspects of this problem.