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XIA Zilong, WANG Suofang, HOU Xiaoting. Influence of tube length on flow resistance and temperature reduction characteristics of tubed vortex reducer[J]. Journal of Aerospace Power, 2020, 35(1): 88-96. doi: 10.13224/j.cnki.jasp.2020.01.011
Citation: XIA Zilong, WANG Suofang, HOU Xiaoting. Influence of tube length on flow resistance and temperature reduction characteristics of tubed vortex reducer[J]. Journal of Aerospace Power, 2020, 35(1): 88-96. doi: 10.13224/j.cnki.jasp.2020.01.011
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Influence of tube length on flow resistance and temperature reduction characteristics of tubed vortex reducer

doi: 10.13224/j.cnki.jasp.2020.01.011

  • Aero-engine Thermal Environment and Structure Key Laboratory of Ministry of Industry and Information Technology,College of Energy and Power Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

  • Received Date: 2019-09-20
  • Publish Date: 2020-01-28
    Abstract
  • Numerical simulation and model experiment method were combined to research the tubed vortex reducer, and the influences of the tube length on the pressure loss coefficient, temperature reduction coefficient and their weights between each section were analyzed. Model experiment results verified the reliability of numerical simulation method. The results showed that increasing the tube length can reduce the pressure loss obviously and increase the temperature reduction of the tubed vortex reducer at the same time. Co-rotating cavity and the tube are the key factors influencial factors to the flow resistance and temperature reduction characteristics of the tubed vortex reducer, with the shift of the weight. When the tube length increased, the pressure loss in tubed vortex reducer was reduced by sacrificing the pressure loss in the tube and reducing the pressure loss in the co-rotating cavity. The rapid increase of the temperature reduction in the tube contributed a lot of to the increase of the temperature reduction coefficient of the tubed vortex reducer. The pressure loss coefficient of the tubed vortex reducer decreased by 8370% and the temperature reduction coefficient increased by 4502% compared with the smooth co-rotating cavity model when the tube length L/b was 0786.

     

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