Open AccessNumerical Study on the Coupling Process of Supercritical Heat Transfer and Combustion in the Boiler
Author(s) -
Zhenxing Zhao,
Chongfang Ma,
Y. Q. Li,
Donghua Lu,
Yuzhen Lin,
Y. Liu,
Chunhui Dai,
Qi Xiao,
Junli Gou
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/701/1/012055
Subject(s) - supercritical fluid , combustion , heat transfer , thermal science , boiler (water heating) , turbulence , mechanics , thermodynamics , materials science , critical heat flux , heat transfer coefficient , chemistry , physics , organic chemistry
The conjugate heat transfer from in–furnace combustion to in-tube supercritical fluid has been numerically investigated in this study. The mathematic model of the conjugate heat transfer process has been constructed. The effects of the heat transfer phenomenons of supercritical fluid in tube and combustion status change in the furnace on the conjugate heat transfer process were analyzed. The results show that the RNG (Renormalization-group) model can better simulate the heat transfer process in the tube and the combustion process in the furnace than the AKN (Abe-Kondoh-Nagano) model. The difference between the two turbulence models for the furnace simulation focuses on the distribution in the high temperature region and the region of the recirculation region.