15th International Heat Transfer Conference, IHTC 2014
August 10, 2014 - August 15, 2014
In this paper, turbulent flow and convective heat transfer of supercritical kerosene through rectangular channels with width and height of 1.5mm×1.5mm, 0.9mm×2.5mm and 2.5mm×0.9mm are numerically studied. The Navier-Stokes equations are solved with RNG κ- turbulence model with low-Reynolds correction in the nearwall region. Thermodynamic and transport properties of kerosene are determined by a 10-species surrogate and the Extended Corresponding State method. Heat conduction equation in the solid wall is also calculated and coupled with heat convection of channel flow via continuity in temperature and heat flux at fluid/solid interfaces. The numerical results show that due to one-side heat loading on the cooling structure, wall heat flux is highly ununiformly distributed along the perimeter of channel cross section, leading to different properties in convective heat transfer through channel inner surfaces. Deterioration of heat transfer of kerosene occurs when the wall temperature of channel approaches the pseudo-critical temperature and at the same time, the wall heat flux exceeds a critical value. It is also found pressure drop of kerosene flow varies significantly with the shape of channel cross section.
Zhong FQ,Dang GX,Xing YF,et al. Numerical study of conjugate heat transfer of supercritical kerosene flow in rectangular cooling channel[C]Proceedings of the 15th International Heat Transfer Conference, IHTC 2014,2014.