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李怡菲1,2(), 董新宇2, 王为术1, 刘璐2(), 赵一璠2
收稿日期:
2023-10-31
修回日期:
2024-12-17
出版日期:
2024-03-22
通讯作者:
刘璐
作者简介:
李怡菲(2001—),女,硕士研究生,16634862916@163.com
基金资助:
Yifei LI1,2(), Xinyu DONG2, Weishu WANG1, Lu LIU2(), Yifan ZHAO2
Received:
2023-10-31
Revised:
2024-12-17
Online:
2024-03-22
Contact:
Lu LIU
摘要:
针对高度集成化和微型模块化高热载荷电子元器件温度控制问题,基于CFD两相求解器,采用数值实验研究了微肋板表面干冰升华喷雾冷却传热特性。结果表明微肋板表面和热源上表面的温度、传热系数、冷却热通量基本呈环形分布,越靠近中心干冰颗粒越多,温度越低,冷却性能越高。热源上表面中心线上中心温度最低,并且其冷却热通量和传热系数呈M型分布。当喷嘴入口速度和干冰占比增大时,模拟热源表面的传热系数和冷却热通量也随之增大,而温度则整体降低。在喷嘴入口速度为20m/s,干冰占比为40%时得到相对最优的冷却热通量170W/cm2和相对最优的传热系数12500W/(m2·K)。
中图分类号:
李怡菲, 董新宇, 王为术, 刘璐, 赵一璠. 微肋板表面干冰升华喷雾冷却传热数值实验研究[J]. 化工学报, DOI: 10.11949/0438-1157.20231121.
Yifei LI, Xinyu DONG, Weishu WANG, Lu LIU, Yifan ZHAO. Numerical experimental study on heat transfer of dry ice sublimation spray cooling on the surface of micro-ribbed plate[J]. CIESC Journal, DOI: 10.11949/0438-1157.20231121.
材料参数 | CO2 | 干冰 | 铜(模拟热源) | 保温材料 |
---|---|---|---|---|
密度(kg/m3) | 1.7878 | 1562 | 8978 | 1818 |
热导率(W/(m·K)) | 0.0145 | 0.086 | 387.6 | 0.288 |
比热容(J/(kg·K)) | 54.55 | 381 | 800 |
表1 材料参数设置
Table. 1 Material Parameter Settings
材料参数 | CO2 | 干冰 | 铜(模拟热源) | 保温材料 |
---|---|---|---|---|
密度(kg/m3) | 1.7878 | 1562 | 8978 | 1818 |
热导率(W/(m·K)) | 0.0145 | 0.086 | 387.6 | 0.288 |
比热容(J/(kg·K)) | 54.55 | 381 | 800 |
图10 不同喷射条件下热源上表面温度、冷却热通量和传热系数分布规律
Fig. 10 Distribution laws of temperature, cooling heat flux and heat transfer coefficient on heat source upper surface under different injection conditions
图11 不同喷射条件下微肋板上表面温度、冷却热通量和传热系数分布
Fig. 11 Distribution of upper surface temperature, cooling heat flux and heat transfer coefficient on micro-fin plate under different injection conditions
图13 不同喷嘴进口流速下模拟热源微肋板上表面平均温度和传热系数变化规律
Fig. 13 Changes in average surface temperature and heat transfer coefficient on simulated heat source micro rib plates under different nozzle inlet flow rates
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