Physical mechanisms involved in grooved flat heat pipes: experimental and numerical analyses

Abstract : An experimental database, obtained with flat plate heat pipes (FPHP) with longitudinal grooves is presented. The capillary pressure measured by confocal microscopy and the temperature field in the wall are presented in various experimental conditions (vapour space thickness, filing ratio, heat transfer rate, tilt angle, fluid). Coupled hydrodynamic and thermal models are developed. Experimental results are compared to results of numerical models. Physical mechanisms involved in grooved heat pipes are discussed, including the boiling limit and the effect of the interfacial shear stress. Finally, recommendations for future experimental and theoretical research to increase the knowledge on FPHP are discussed.
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International Journal of Thermal Sciences, Elsevier, 2011, 50, pp.1243-1252
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S. Lips, F. Lefevre, J. Bonjour. Physical mechanisms involved in grooved flat heat pipes: experimental and numerical analyses. International Journal of Thermal Sciences, Elsevier, 2011, 50, pp.1243-1252. <hal-00684132>

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