Numerical Analysis Of The Heat Transfer Character Of Cold Plate Of Two-phase With High Heat Flux

In this paper, the ways used in the electron device for cooling and the present research situations of heat pipe are summarized. Related theories and present application status of two-phase cold plate are emphatically introduced. Based on the heat transfer models of cold plate with high heat flux, the energy equation is dispersed and boundary conditions is set, then heat transfer character of bottom of cold plate has been analyzed by Fluent of CFD Software. The numerical solution shows that temperature distribution rule on every cross-section of cold plate agree with conclusions of theory analysis.In order to investigate the effects of all kinds factors on heat transfer character of cold plate, the temperature distribution of bottom plates that have three different structures and sizes are computed when variables that are heat power, saturation temperature and heater positions vary respectively. Relation between temperature distribution and operating modes can be analyzed from the temperature distribution, the following conclusions are obtained: figures of maximum temperature and maximum temperature difference on the bottom plate with the change of heat power or saturation temperature, influence of heater positions upon distribution of temperature distribution and a more optimum selection about the position of heaters. These conclusions offer some references in further theory research and practical application of cold plate.Thermal resistance of every heat transfer segments between heaters and cold plate has been computed, and every thermal resistance is analyzed and compared in numeric value, then measures of consolidation heat transfer in segment of big thermal resistance are presented for a better heat transfer effects.