Universal approach to predicting full-range post-dryout heat transfer under uniform and non-uniform axial heat fluxes

doi:10.1016/j.nucengdes.2022.111790

	Universal approach to predicting full-range post-dryout heat transfer under uniform and non-uniform axial heat fluxes
	Yu, Dali 1,3; Xu, Chi 1,2; Hu, Chongju 1,2; Fan, Yijiang 1,2
刊名	NUCLEAR ENGINEERING AND DESIGN
	2022-07-01
卷号	393
关键词	Post-dryout Developing region Heat transfer coefficient Non-uniform axial heat flux Dryout
ISSN号	0029-5493
DOI	10.1016/j.nucengdes.2022.111790
通讯作者	Yu, Dali(dlyu@inest.cas.cn)
英文摘要	In the present study, based on three experiments including two uniform axial heat flux experiments (Becker and KIT) and one non-uniform axial heat flux experiment (BeckerII), an universal mechanistic model was developed for the full-range post-dryout heat transfer. The whole post-dryout heat transfer region consists of a developing region and a fully developed region. A determination equation for the length of the developing post-dryout region was proposed and verified to distinguish and quantify these two regions, which can be used to calculate the peak wall temperature position in most cases. The mechanistic model considers three-path heat transfer that involves heat transfer from heated wall to vapor, from vapor to droplets, and from direct contact between wall and droplets. The cross-section of the flow was separately considered in the modeling as a film region and a core region, which makes it possible to account for the impact of the droplets' concentration distribution over the cross-section on the interfacial heat transfer between vapor and droplets. Model assessments cover a broad range of flow conditions, around 25,000 data points, and multiple types of fluid. Results indicate that the proposed model could provide precise predictions for the full-range post-dryout heat transfer.
资助项目	Ministry of Education Key Laboratory of Advanced Reactor Engineering and Safety Project[ARES-2020-04] ; CASHIPS Director's Fund[YZJJ2021QN36]
WOS关键词	FLOW ; EQUILIBRIUM ; DEPOSITION
WOS研究方向	Nuclear Science & Technology
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000802961300004
资助机构	Ministry of Education Key Laboratory of Advanced Reactor Engineering and Safety Project ; CASHIPS Director's Fund
内容类型	期刊论文
源URL	[http://ir.hfcas.ac.cn:8080/handle/334002/130993]
专题	中国科学院合肥物质科学研究院
通讯作者	Yu, Dali
作者单位	1.Chinese Acad Sci, Inst Nucl Energy Safety Technol, Hefei Inst Phys Sci, 350 Shushanhu Rd, Hefei 230031, Anhui, Peoples R China 2.Univ Sci & Technol China, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China 3.Tsinghua Univ, Key Lab Adv Reactor Engn & Safety, Minist Educ, 30 Shuangqing Rd, Beijing 100084, Peoples R China
推荐引用方式 GB/T 7714	Yu, Dali,Xu, Chi,Hu, Chongju,et al. Universal approach to predicting full-range post-dryout heat transfer under uniform and non-uniform axial heat fluxes[J]. NUCLEAR ENGINEERING AND DESIGN,2022,393.
APA	Yu, Dali,Xu, Chi,Hu, Chongju,&Fan, Yijiang.(2022).Universal approach to predicting full-range post-dryout heat transfer under uniform and non-uniform axial heat fluxes.NUCLEAR ENGINEERING AND DESIGN,393.
MLA	Yu, Dali,et al."Universal approach to predicting full-range post-dryout heat transfer under uniform and non-uniform axial heat fluxes".NUCLEAR ENGINEERING AND DESIGN 393(2022).