Volume 31 Issue 6
Jun.  2016
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Article Navigation >  Journal of Aerospace Power  > 2016  >  31(6): 1289-1296
ZHU Kun, XU Guo-qiang, JIA Zhou-xia, ZHANG Qi-jun. Pressure effect on the heat transfer characteristics of hydrocarbon fuel in the horizontal circular tube at supercritical pressures[J]. Journal of Aerospace Power, 2016, 31(6): 1289-1296. doi: 10.13224/j.cnki.jasp.2016.06.002
Citation: ZHU Kun, XU Guo-qiang, JIA Zhou-xia, ZHANG Qi-jun. Pressure effect on the heat transfer characteristics of hydrocarbon fuel in the horizontal circular tube at supercritical pressures[J]. Journal of Aerospace Power, 2016, 31(6): 1289-1296. doi: 10.13224/j.cnki.jasp.2016.06.002
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Pressure effect on the heat transfer characteristics of hydrocarbon fuel in the horizontal circular tube at supercritical pressures

doi: 10.13224/j.cnki.jasp.2016.06.002

  • 1. Academy of Aeronautic Propulsion Technology, Aviation Industry Corporation of China, Beijing 101304, China;

  • 2. National Key Laboratory of Science and Technology on Aero-Engine Aero-thermodynamics, School of Energy and Power Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100191, China

  • Received Date: 2015-11-14
  • Publish Date: 2016-06-28
    Abstract
  • Experiments were performed to investigate the pressure effect on the heat transfer characteristic of hydrocarbon fuel RP-3 in the horizontal circular tube at supercritical pressures. The mechanisms of heat transfer variation due to the radial thermal property, buoyancy and acceleration effects were discussed as well. The results showed that the heat transfer coefficient increased with the rising fuel bulk temperature. Under different pressures, the fuel thermal property variation's gradient led to the discrepancies of heat transfer and Nux peak points at the same dimensionless bulk temperature. The main reason of the heat transfer distribution was attributable to the radial thermal property gradient due to the temperature discrepancy between the tube inner wall and bulk fuel. However, the buoyancy and acceleration effect were limited in the experiment region. It showed that the dimensionless parameter Grq/Grth precisely reflected the heat transfer characteristic variation of the supercritical hydrocarbon in the horizontal circular tube.

     

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