祝贺2021级硕士王爽撰写的论文在 国际权威期刊 International Journal of Thermal Sciences 发表
- 发布时间：
- 2024-12-31
- 文章标题：
- 祝贺2021级硕士王爽撰写的论文在 国际权威期刊 International Journal of Thermal Sciences 发表
- 内容：
2024年11月，已毕业硕士王爽投稿的有关硬尾肋柱通道沸腾强化传热的文章在国际权威期刊International Journal of Thermal Sciences 发表，论文详情如下：
论文题目： Experimental study on ffow boiling of ffuorocarbon ffuid in the pin-ribbed micro-channel with rigid tails
论文作者： Shuang Wang , Lei Xie , Mei Lin * , Qiuwang Wang
期刊： International Journal of Thermal Sciences 209 (2025) 109541
网址： https://doi.org/10.1016/j.ijthermalsci.2024.109541
摘要：
In this work, a novel type of pin-ribbed micro-channel with rigid tails is designed based on the conventional pinribbed micro-channel. A comparative experimental study is carried out using ffuorocarbon ffuid Novec649. The ffow boiling heat transfer and pressure drop characteristics are investigated under horizontal/vertical placement at inlet subcooling temperature of 25 ◦C. The ranges of inlet mass ffux and heat ffux are 519–1818 kg⋅m− 2 ⋅s − 1 and 50–500 kW⋅m− 2 , respectively. The results show that at a given mass ffux, and heat ffux of 300–500 kW⋅m− 2 , the vertical pin-ribbed micro-channel with rigid tails has the lowest average wall temperature, the largest average heat transfer coefffcient, and the smallest total pressure drop, therefore it has the largest j-factor, more than 60% higher than that of the horizontal/vertical channel without rigid-tails. With the aid of a high-speed camera, the localized bubble movement phenomena in horizontal/vertical micro-channel with rigid tails was photographed at a mass ffux of 519 kg⋅m− 2 ⋅s − 1 and a heat ffux of 100 kW⋅m− 2 . Three types of bubble detachment modes in the wake region at the boiling stable state are observed: natural shedding, one-sided shear and twosided shear. The bubble detachment diameter under the one-sided shear is more than 23% smaller than that of two-sided shear, and that of the horizontal channel is more than 44% higher than that in the vertical channel, whereas its bubble detachment frequency is only 50% of that in the vertical channel. Therefore, the vertical placement is more helpful for the rigid tails playing a role in the breakup and detachment of bubbles. The experimental results conffrm the advantages of adding rigid tails behind the square-rib to enhance the comprehensive heat transfer performance of ffow boiling, which can provide a guidance for the structural design of two-phase miniature heat sinks.