A stochastic finite element method is applied to thermal analysis of cooling in large-scale computers using a multi-fin flexible thermal contactor. The stochastic finite element method is a general technique to incorporate the effect of stochastic or statistical features of parameters into a finite element method by means of sensitivity analysis. Using this method, the temperature distribution of the chip is calculated, and also temperature variations associated with variations of thermal properties, heat generation rates, and uncertainties involved in real systems are estimated. Following presentation of the results obtained, the thermal performance of this system and applicability of the stochastic finite element method to computer cooling problems are discussed.

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