An Improved Heat Transfer Correlation for Supercritical Aviation Kerosene Flowing Upward and Downward in Vertical Tubes
- Resource Type
- Authors
- Zhang Yingchun; Gongnan Xie; Youqian Chen; Yong Li; Feng Sun
- Source
- Journal of Thermal Science. 29:131-143
- Subject
- Regenerative cooling
Materials science
Vertical tube
020209 energy
02 engineering and technology
Mechanics
Condensed Matter Physics
Supercritical fluid
020303 mechanical engineering & transports
0203 mechanical engineering
Heat flux
Heat transfer
Aviation kerosene
0202 electrical engineering, electronic engineering, information engineering
Scramjet
Dimensionless quantity
- Language
- ISSN
- 1993-033X
1003-2169
Correlations are crucial to the design of cooling channels employed in regenerative cooling systems for scramjets. In this paper, correlations for the aviation kerosene flowing upward and downward in vertical tubes are studied and discussed. Four existing correlations are assessed against the available experimental data. To further improve the prediction accuracy of the heat transfer behaviors of the supercritical aviation kerosene, a new dimensionless parameter (Qi) relevant to the heat flux is proposed and introduced into the construction of a new correlation. Verification shows that the new correlation is more accurate than existing correlations.