A STUDY ON THE VISCOUS FLOW IN HELICAL ELIPTICAL PIPES

摘要

The fully developed laminar flow in helical elliptical pipes is influenced by curvature, torsion and aspect ratio of cross-section. With the aid of the computerized symbolic manipulation technique, the governing equation is solved by the Galerkin method. The procedures of implementing the Galerkin method on curvilinear pipes are discussed. The effects of the aspect ration and torsion on the flow structure, wall shear stress and flow ratio are examined in detail. A set of Galerkin coefficients are also presented for two cases.