Type
Thèse
Lieu
Université de Lorraine, CNRS, LEMTA
Date
01/10/2021
Sujet/Titre
Experimental characterization of heat dissipation produced by multiple drop impacts on a textured surface
Descriptif
Drastic miniaturization of electronic components and massive use of intensive computing in the world has created an urgent demand for innovative cooling techniques to maintain the electronic devices safely below the damage limit temperature. This is also a major challenge to reduce energy and liquid coolant (mainly water) consumption. Today, heat dissipation from supercomputer chips is of the order of 100 W/cm2, which exceeds the capabilities of single- phase (air and liquid) cooling technologies. Developers are focusing therefore their attention on two-phase cooling techniques, which exploit both the coolant’s sensible and latent heat to dissipate greater amounts of heat. Among them, spray cooling appears to offer the best balance between a high heat flux removal, a uniform cooling over large areas, and a large inventory of liquids [1].
A comprehensive knowledge of the physical phenomena that occur when droplets impinge on a hot surface, is expected to help improving the design spray cooling systems. Today, predicting the cooling performance of a spray is hardly possible due the dependence on multiple parameters related to the fluid flow and the surface and fluid properties.
A comprehensive knowledge of the physical phenomena that occur when droplets impinge on a hot surface, is expected to help improving the design spray cooling systems. Today, predicting the cooling performance of a spray is hardly possible due the dependence on multiple parameters related to the fluid flow and the surface and fluid properties.
M.
Prénom
Guillaume
Nom
Castanet
email
guillaume.castanet@univ-lorraine.fr
Téléphone
Fichier