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Numerical computation of 3D heat transfer in complex parallel heat exchangers using generalized Graetz modes

Pierre, Charles and Bouyssier, Julien and De Gournay, Frédéric and Plouraboué, Franck Numerical computation of 3D heat transfer in complex parallel heat exchangers using generalized Graetz modes. (2014) Journal of Computational Physics, 268. 84-105. ISSN 0021-9991

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Official URL: http://dx.doi.org/10.1016/j.jcp.2014.02.037

Abstract

We propose and develop a variational formulation dedicated to the simulation of parallel convective heat exchanger that handles possibly complex input/output conditions as well as connection between pipes. It is based on a spectral method that allows to re-cast three-dimensional heat exchangers into a two-dimensional eigenvalue problem, named the generalized Graetz problem. Our formulation handles either convective, adiabatic, or prescribed temperature at the entrance or at the exit of the exchanger. This formulation is robust to mode truncation, offering a huge reduction in computational cost, and providing insights into the most contributing structure to exchanges and transfer. Several examples of heat exchangers are analyzed, their numerical convergence is tested and the numerical efficiency of the approach is illustrated in the case of Poiseuille flow in tubes.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S0021999114001636?via=ihub
HAL Id:hal-00966670
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
Université de Toulouse > Université Toulouse - Jean Jaurès - UT2J (FRANCE)
Université de Toulouse > Université Toulouse 1 Capitole - UT1 (FRANCE)
Other partners > Université de Pau et des Pays de l'Adour - UPPA (FRANCE)
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Deposited By: Franck PLOURABOUE
Deposited On:13 Mar 2014 16:25

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