【摘要】 为研究液态金属铟锡铋合金在管内的流动换热特性，系统分析了在相同的等效直径条件下，不同管型（包括圆管、椭圆管、扁平管、正方形管和三角形管）对温度、速度和压力分布的影响，以及雷诺数、热流密度等关键热参数对铟锡铋合金传热动力学的影响。结果表明，正方形管在整体换热性能上优于其他管型；入口雷诺数从5 419增加到13 548时，换热系数从4 695.962 W/（m~2??K）增加到9 357.478 W/（m~2??K）；热流密度从110 W/cm~2增加到130 W/cm~2时，换热系数从4 695.962 W/（m~2??K）增加到5 541.235 W/（m~2??K）；增加入口雷诺数和增加管壁热流密度均能显著提高液态金属与管壁之间的换热效率。研究可为液态金属的热管理系统优化设计及应用提供参考。更多还原

【Abstract】 To investigate the flow and heat transfer characteristics of liquid indium-tin-bismuth alloy within tubes,a systematic analysis was conducted on the effects of different tube types(including circular,elliptical,flattened,square,and triangular tubes) under the same equivalent diameter condition on temperature,velocity,and pressure distributions,as well as the influence of key thermal parameters such as Reynolds number and heat flux density on the heat transfer dynamics of the indium-tinbismuth alloy.The results indicate that the square tube exhibits superior overall heat transfer performance compared to other tube types. When the inlet Reynolds number increased from 5 419 to 13 548,the heat transfer coefficient increased from 4 695.962 W/（m~2??K） to 9 357.478 W/（m~2??K）.When the wall heat flux density increased from 110 W/cm~2 to 130 W/cm~2,the heat transfer coefficient increased from 4 695.962 W/（m~2??K） to 5 541.235 W/（m~2??K）.Both increasing the inlet Reynolds number and increasing the tube wall heat flux density significantly enhance the heat transfer efficiency between the liquid metal and the tube wall.This study provides a reference for the optimal design and application of thermal management systems utilizing liquid metals.更多还原