Pulsatory Flow in Curved Pipes of Rectangular Cross-Section : 2nd Report, The Effect of the Aspect Ratio of a Pipe

Abstract

The laminar, fully-developed pulsatory flow of an incompressible viscous fluid through curved pipes with rectangular cross-section has been investigated analytically and experimentally. The flow fields are made clear by numerical analysis for mean Dean numbers D^^-=10∼150, Womersley numbers α=2∼20, and flow rate ratios η=0.5 and 1. The experiment is made of power losses and the results are compared with the numerical ones. The effects of the aspect ratio of a pipe on the flow are fully discussed. Consequently, it is found that the flow in the square-sectioned pipe is greatly under the influence of the curvature of the pipe.