Numerical simulation of turbulent heat transfer and fluid flow in different tube designs

Oni, T. O. and Paul, M. C. (2014) Numerical simulation of turbulent heat transfer and fluid flow in different tube designs. In: World Congress on Engineering 2014, London, UK, 2-4 July 2014, pp. 1441-1446.

Abstract

Numerical simulation was carried out to study the heat transfer, friction factor and thermal performance of water inside different tubes induced with different twisted tapes. The purpose is to ascertain which of the tube designs gives the best performance when compared with the plain tube. The tubes were under uniform wall heat flux condition and Reynolds number in the range 5000 ≤ Re ≤ 20000 were considered. RNG κ − ε equation model was selected for the numerical simulations and RANS equations were employed to render the Navier-Stokes equations tractable. The best performance was obtained when the tube was fitted with alternate-axis triangular cut twisted tape. Its Nusselt number and friction factor are respectively 2.07 – 3.33 and 10.65 – 13.1 times better than that of a plain tube and its thermal performance factor is 1.35 – 1.43 times better than that of the tube with plain twisted tape.

• Item Type: Conference Proceedings
• Additional Information: ISBN: 9789881925350
• Status: Published
• Refereed: Yes
• Glasgow Author(s) Enlighten ID: Paul, Professor Manosh and Oni, Mr Taiwo
• Authors: Oni, T. O., and Paul, M. C.
• College/School: College of Science and Engineering > School of Engineering > Electronics and Nanoscale Engineering; College of Science and Engineering > School of Engineering > Systems Power and Energy
• Copyright Holders: Copyright © 2014 The Authors
• Publisher Policy: Reproduced with the permission of the authors