振動制御形熱輸送管に関する研究 : 総括熱抵抗の数値解析

概要

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In this report, overall thermal resistance of oscillation-controlled heat transport tubes under the optimum operating condition is investigated by numerical simulation. Results obtained from the simulation can be summarized as follows. This kind of heat transport tube consists of heating/cooling regions, a fully developed column region, and undeveloped column regions between the former two regions. Heat transfer coefficients at inner walls of the heating/cooling region are near those in the fully developed laminar flow for small amplitudes, but increase for larger amplitudes. Within the conditions of the present numerical simulation, major resistance exists in the fully developed column region for amplitudes smaller than 50 mm, and it is possible to realize values of overall thermal conductance 10 times larger than the thermal conductance of a copper rod. Finally, based on the results of numerical simulation, a simplified model for the overall thermal resistance is presented.
社団法人日本機械学会の論文
1995-08-25