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Computation 2017, 5(2), 25; doi:10.3390/computation5020025

Numerical Simulation of the Laminar Forced Convective Heat Transfer between Two Concentric Cylinders

Department of Building Services Engineering, Polytechnic University of Timisoara, Piata Victoriei, no 2A, 300006 Timisoara, Romania
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Academic Editor: Demos Tsahalis
Received: 20 March 2017 / Revised: 26 April 2017 / Accepted: 10 May 2017 / Published: 13 May 2017
(This article belongs to the Section Computational Engineering)
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Abstract

The dual reciprocity method (DRM) is a highly efficient numerical method of transforming domain integrals arising from the non-homogeneous term of the Poisson equation into equivalent boundary integrals. In this paper, the velocity and temperature fields of laminar forced heat convection in a concentric annular tube, with constant heat flux boundary conditions, have been studied using numerical simulations. The DRM has been used to solve the governing equation, which is expressed in the form of a Poisson equation. A test problem is employed to verify the DRM solutions with different boundary element discretizations and numbers of internal points. The results of the numerical simulations are discussed and compared with exact analytical solutions. Good agreement between the numerical results and exact solutions is evident, as the maximum relative errors are less than 5% to 6%, and the R2-values are greater than 0.999 in all cases. These results confirm the effectiveness and accuracy of the proposed numerical model, which is based on the DRM. View Full-Text
Keywords: concentric annular tube; laminar flow; heat convection; heat flux; boundary condition; dual reciprocity method; numerical model concentric annular tube; laminar flow; heat convection; heat flux; boundary condition; dual reciprocity method; numerical model
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Sarbu, I.; Iosif, A. Numerical Simulation of the Laminar Forced Convective Heat Transfer between Two Concentric Cylinders. Computation 2017, 5, 25.

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