Entropy analysis of laminar-forced convection in a pipe with wall roughness


Ozalp A. A.

INTERNATIONAL JOURNAL OF EXERGY, vol.6, no.2, pp.249-275, 2009 (Journal Indexed in SCI) identifier identifier

  • Publication Type: Article / Article
  • Volume: 6 Issue: 2
  • Publication Date: 2009
  • Doi Number: 10.1504/ijex.2009.024001
  • Title of Journal : INTERNATIONAL JOURNAL OF EXERGY
  • Page Numbers: pp.249-275

Abstract

Momentum and heat transfer rates, as well as entropy generation have been numerically investigated for fully developed, forced convection, laminar flow in a micro-pipe. Compressible and variable fluid property continuity, Navier-Stokes and energy equations are solved for various Reynolds number, constant heat flux and surface roughness cases; entropy generation is discussed in conjunction with the velocity and temperature profiles, boundary layer parameters and heat transfer-frictional characteristics of the pipe flow. Simulations concentrated on the impact of wall roughness based viscous dissipation on the heat transfer behaviour and so occurring heating/cooling activity and the resulting overall and radial entropy generation.