A general correlation for saturated flow boiling heat transfer in vertical narrow rectangular channel based on test data from specialized experiment

IF 3.3 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Progress in Nuclear Energy Pub Date : 2025-02-20 DOI:10.1016/j.pnucene.2025.105668

Bo Kuang , Pengfei Liu , Jian Deng , Shuhua Ding , Dan Wu

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引用次数: 0

Abstract

Due to the special geometry of narrow rectangular channels, their heat transfer characteristics differ from conventional channels. Heat transfer data and visualization images within a wide parameter range are obtained in this study, through heat transfer tests and visualization tests. The boiling curves of rectangular narrow channel under different parameter conditions are given, and the effect of parameters on the heat transfer coefficient is analyzed. It is indicated that mass flux, pressure, and gap size have an impact on the heat transfer coefficient. In addition, the boiling heat transfer mechanism exhibits a dominant mode transition from nucleate boiling to forced convective vaporization. In response to the asymmetric confinement effect on the vapor phase in narrow rectangular channels, the vapor velocity correction coefficient and vapor size correction coefficient are obtained through vapor force balance analysis, to characterize the effects of convection in liquid film evaporation and asymmetric bubble growth, respectively. By combining the liquid film confinement number and mechanism transition function applicable to rectangular narrow channels, a heat transfer correlation suitable for rectangular narrow channels is obtained, and the results showed that the new equation was in good agreement with the experimental results.

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来源期刊

Progress in Nuclear Energy 工程技术-核科学技术

CiteScore

5.30

自引率

14.80%

发文量

331

审稿时长

3.5 months

期刊介绍： Progress in Nuclear Energy is an international review journal covering all aspects of nuclear science and engineering. In keeping with the maturity of nuclear power, articles on safety, siting and environmental problems are encouraged, as are those associated with economics and fuel management. However, basic physics and engineering will remain an important aspect of the editorial policy. Articles published are either of a review nature or present new material in more depth. They are aimed at researchers and technically-oriented managers working in the nuclear energy field. Please note the following: 1) PNE seeks high quality research papers which are medium to long in length. Short research papers should be submitted to the journal Annals in Nuclear Energy. 2) PNE reserves the right to reject papers which are based solely on routine application of computer codes used to produce reactor designs or explain existing reactor phenomena. Such papers, although worthy, are best left as laboratory reports whereas Progress in Nuclear Energy seeks papers of originality, which are archival in nature, in the fields of mathematical and experimental nuclear technology, including fission, fusion (blanket physics, radiation damage), safety, materials aspects, economics, etc. 3) Review papers, which may occasionally be invited, are particularly sought by the journal in these fields.