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Modélisation du comportement thermique transitoire d’un caloduc : application au refroidissement de l’électronique associée à un alterno-démarreur

Abstract : This work is aimed to study the transient performances of heat pipe used to cool electronics components of stator-alternator. The study consists of two stages: modelling and experimentation. The first stage consists in developing multiple scale modelling used to analyse heat pipe’s performances. The first model, denoted “helps-design model” is developed for manufacturing and designing procedures of heat pipe. The second model “0D”, is based on a lumped analysis of a heat pipe subjected to the heat flux released by the electronic components. The second model is a “2T” model taking into accounts both the evaporator and condenser temperatures. The third model is a transient 2D thermal model of conductive effects in the wall and the wick of the heat pipe and the forth one is a transient 3D model coupled to a 2D hydrodynamic model were the flow in both wick and vapour core are computed. An interesting comparison of the results performed with these models lets know the more adapted model in the process of flat heat pipe design for electronic components thermal management. In order to account for the microscopic mechanisms of heat and mass transfers, a microscopic model of the liquid-vapour interface is developed.The second stage is devoted to the experimental study. It consists of designing and manufacturing an experimental set-up. Improved experimental investigations are being performed in order to provide a validation of the present model.
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https://hal-uphf.archives-ouvertes.fr/tel-03018857
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Submitted on : Monday, November 23, 2020 - 10:10:21 AM
Last modification on : Tuesday, October 19, 2021 - 6:38:17 PM
Long-term archiving on: : Wednesday, February 24, 2021 - 6:37:38 PM

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Ocho Raymond Sonan. Modélisation du comportement thermique transitoire d’un caloduc : application au refroidissement de l’électronique associée à un alterno-démarreur. Mécanique des fluides [physics.class-ph]. Université de valenciennes et du Hainaut-Cambrésis, 2009. Français. ⟨NNT : 2009VALE0003⟩. ⟨tel-03018857⟩

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