Study on coupled heat transfer model and enhanced heat transfer law of liquid metals and supercritical fluids

The supercritical carbon dioxide Brayton cycle system is being considered for application in the power conversion system of advanced liquid metal fast reactors. One important research topic is the coupled heat transfer characteristics and enhanced heat transfer laws between liquid metals and supercr...

Full description

Saved in:
Bibliographic Details
Published in:Journal of nuclear science and technology 2024-08, Vol.61 (8), p.1089-1108
Main Authors: Su, Xing-Kang, Zhang, Jin-Biao, Qiu, Jing, Chen, Qi-Jian, Guo, Yue-Feng, Li, Xian-Wen, Gu, Long
Format: Article
Language:English
Subjects:
Bismuth
Brayton cycle
Carbon dioxide
Computational fluid dynamics
Conjugates
coupling heat transfer
Energy conversion
Fluid flow
four-equation model
Heat exchangers
Heat flux
Heat transfer
Heavy metals
Inlet temperature
Liquid metals
Metals
Numerical methods
PCHE
Prandtl number
Reynolds number
Straight channels
Supercritical fluids
Turbulence models
Citations: Items that this one cites
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The supercritical carbon dioxide Brayton cycle system is being considered for application in the power conversion system of advanced liquid metal fast reactors. One important research topic is the coupled heat transfer characteristics and enhanced heat transfer laws between liquid metals and supercritical fluids. However, the traditional Reynolds analogy hypothesis with a constant turbulent Prandtl number is difficult to satisfy the numerical conjugate heat transfer research of liquid metals and supercritical fluids. Therefore, based on the open-source computational fluid dynamics program OpenFOAM, a numerical method suitable for the coupled heat transfer calculation of liquid metals and supercritical fluids was developed, which can achieve precise conjugate heat transfer solutions by applying different turbulence models and heat flux models to liquid metals and supercritical fluids. Subsequently, based on this method, the coupled heat transfer behavior of liquid metals and supercritical fluids in the straight channel of a typically printed circuit heat exchanger was studied. The focus was investigating the conjugate heat transfer characteristics of liquid heavy metal lead-bismuth eutectic and liquid metal sodium with supercritical carbon dioxide. Some sensitive results, including the inlet temperature and Reynolds number of liquid metals and supercritical fluids, were qualitatively and quantitatively analyzed.
ISSN:0022-3131
1881-1248
DOI:10.1080/00223131.2023.2297787