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Experimental study of heat transfer in a supercomputer immersion cooling system

Abstract

Experimental study of heat transfer in a supercomputer immersion cooling system

Voronchihin S.G., Pomytkin V.A., Flaxman A.L., Zemtsov M.A.

Incoming article date: 26.12.2017

The article considers the experimental estimation of the heat transfer coefficient in a hybrid immersion cooling system with contact point cooling and dry zones. The change in the heat transfer coefficient is made through a change in the Reynolds number for the flow of the coolant in the immersion cooling system. The experimental investigation is carried out on the basis of a numerical simulation model of the process under study. As a result, the dependences of the thermal resistance of the processor-heat exchanger system on the heat transfer coefficient and on the Reynolds number of the turbulent flow were obtained, and the results with the simulation results were estimated. It is found that, with an increase in the Reynolds number, the heat transfer intensification is weaker than the theoretical one. The refinement coefficients for the case under consideration are found.

Keywords: processor, heat flow, thermal resistance, Laplace equation, turbulent flow, Reynolds number, heat transfer, immersion cooling system, immersion cooling system, cavitation