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Entropy Analysis in Pipe Flow Subjected to External Heating
Entropy 2003, 5(5), 404-416; doi:10.3390/e5050404

Entropy Generation in Laminar Fluid Flow through a Circular Pipe

*  and
Department of Mechanical Engineering, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia
* Author to whom correspondence should be addressed.
Received: 21 November 2002 / Accepted: 1 June 2003 / Published: 31 December 2003
(This article belongs to the Special Issue Entropy Generation in Thermal Systems and Processes)
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A numerical solution to the entropy generation in a circular pipe is made. Radial and axial variations are considered. Navier-Stokes equations in cylindrical coordinates are used to solve the velocity and temperature fields. Uniform wall heat flux is considered as the thermal boundary condition. The distribution of the entropy generation rate is investigated throughout the volume of the fluid as it flows through the pipe. Engine oil is selected as the working fluid. In addition, water and Freon are used in a parametric study. The total entropy generation rate is calculated by integration over the various cross-sections as well as over the entire volume.
Keywords: entropy; generation; numerical; two-dimensional; heating; pipe entropy; generation; numerical; two-dimensional; heating; pipe
This is an open access article distributed under the Creative Commons Attribution License (CC BY) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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Sahin, A.Z.; Ben-Mansour, R. Entropy Generation in Laminar Fluid Flow through a Circular Pipe. Entropy 2003, 5, 404-416.

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