NDLI: Numerical investigation on flow and convective heat transfer of aviation kerosene at supercritical conditions

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Numerical investigation on flow and convective heat transfer of aviation kerosene at supercritical conditions

Content Provider	Springer Nature Link
Author	Dang, GuoXin Zhong, FengQuan Chen, LiHong Chang, XinYu
Copyright Year	2012
Abstract	In this paper, characteristics of flow and convective heat transfer of China RP-3 kerosene in straight circular pipe were numerically studied. Navier-Stokes equations were solved using RNG k-ɛ turbulence model with low Reynolds number correction. The thermophysical and transport properties of the China RP-3 kerosene were calculated with a 10-species surrogate and the extended corresponding state method (ECS) combined with Benedict-Webb-Rubin equation. The independence of grids was first studied and the numerical results were then compared with experimental data for validation. Under flow conditions given in the paper, the results show that deterioration of convective heat transfer occurs when the wall temperature is slightly higher than the pseudo-critical temperature of kerosene for cases with wall heat flux of 1.2 and 0.8 MW/m$^{2}$. The degree of the heat transfer deterioration is weakened as the heat flux decreases. The deterioration, however, does not happen when the heat flux on the pipe wall is reduced to 0.5 MW/m$^{2}$. Based on the analysis of the near-wall turbulent properties, it is found that the heat transfer deterioration and then the enhancement are attributed partly to the change in the turbulent kinetic energy in the vicinity of pipe wall. The conventional heat transfer relations such as Sieder-Tate and Gnielinski formulas can be used for the estimation of kerosene heat convection under subcritical conditions, but they are not capable of predicting the phenomenon of heat transfer deterioration. The modified Bae-Kim formula can describe the heat transfer deterioration. In addition, the frictional drag would increase dramatically when the fuel transforms to the supercritical state.
Starting Page	416
Ending Page	422
Page Count	7
File Format	PDF
ISSN	16747321
Journal	Science in China Series E: Technological Sciences
Volume Number	56
Issue Number	2
e-ISSN	18691900
Language	English
Publisher	SP Science China Press
Publisher Date	2012-11-17
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	aviation kerosene supercritical convective heat transfer numerical study Engineering
Content Type	Text
Resource Type	Article
Subject	Engineering Materials Science

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