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基于构形理论和理论,以当量热阻为目标对层流冷却条件下的圆柱体热源进行构形研究,分析热源直径和导热系数对其传热性能的影响.结果表明:在热源体积一定的条件下,不存在最佳热源直径使得其当量热阻取得最小值.随着热源直径的减小、导热系数的增大,热源当量热阻减小,此时热源系统的整体传热性能得到提高.此外,圆柱体热源表面温度沿来流方向逐渐增大,且其表面换热系数沿来流方向逐渐减小.本文所得结果对热源的优化设计有一定的参考价值.
Based on the theory of configuration and theory, the heat transfer of cylinder under the condition of laminar cooling was studied with equivalent thermal resistance as the target, and the influence of heat source diameter and thermal conductivity on the heat transfer performance was analyzed. The results show that when the heat source volume is constant , The optimum heat source diameter does not exist so that the equivalent thermal resistance achieves the minimum value.As the diameter of the heat source decreases, the thermal conductivity increases and the heat source equivalent thermal resistance decreases, and the overall heat transfer performance of the heat source system is improved In addition, the surface temperature of cylinder heat source increases along the flow direction, and the surface heat transfer coefficient decreases gradually along the flow direction.The results obtained in this paper have certain reference value for the optimal design of heat source.