Augmentation of Heat Transfer in a Circular Pipe by Means of Twisted Vane Inserts

Abstract

Heat transfer characteristics for swirl /low of water in a circular pipe are studied numerically. The pipe is fitted with heat resistant vanes. The performance of this pipe is compared with that of an empty pipe under similar conditions. The three dimensional Navier-Stokes equations for incompressible Newtonian Jluid Jlow are used. This investigation reveals that the swirl Jlow increases heat transfer. The fficts ofvarious parameters such as Reynolds number, inlet pressure, twisting angle, surface heat flux, surface temperature, pipe length etc. are also studied.