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Experimental and numerical contribution to heat transfer enhancement in compact plate heat exchangers

Abstract : In the framework of CEA R&D program to develop an industrial prototype of Sodiumcooled Fast Reactor, the present thesis aimed to propose an innovative compact heat exchanger technology. In order to increase the global compactness the basic idea of this work is to design a channel were the fluid flow is as much three-dimensional as possible. In particular the channel can be thought as the result of the superposition of two undulated channels in phase opposition. To numerically provide a physically-consistent model, a new non-linear eddy viscosity named Anisotropic Shear Stress Transport (ASST) model has been developed and implemented into the available solver ANSYS FLUENT. To validate the numerical model, two experimental sections have been used to acquire an extensive aerodynamic database, whereas, to validate the thermal modeling approach, the VHEGAS facility has been built. Once having validated the ASST model, correlations for friction factor and Nusselt number for various geometries could be obtained. Finally, it has been shown that the innovative channel is the most compact one among the most important existing industrial compact heat exchanger technologies.
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Contributor : Cécile André Connect in order to contact the contributor
Submitted on : Wednesday, March 4, 2015 - 11:10:32 AM
Last modification on : Thursday, October 28, 2021 - 3:16:37 PM
Long-term archiving on: : Friday, June 5, 2015 - 10:41:28 AM


  • HAL Id : tel-01122585, version 1



F. Vitillo. Experimental and numerical contribution to heat transfer enhancement in compact plate heat exchangers. Modeling and Simulation. Institut Supérieur de l'Aéronautique et de l'Espace, 2014. English. ⟨tel-01122585⟩



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