Volume 30 Issue 7
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WU Dan, LIU Yan, WANG Jian-ping. Three-dimensional numerical simulation of the parametric properties of continuously rotating detonation engine[J]. Journal of Aerospace Power, 2015, 30(7): 1576-1582. doi: 10.13224/j.cnki.jasp.2015.07.006
Citation: WU Dan, LIU Yan, WANG Jian-ping. Three-dimensional numerical simulation of the parametric properties of continuously rotating detonation engine[J]. Journal of Aerospace Power, 2015, 30(7): 1576-1582. doi: 10.13224/j.cnki.jasp.2015.07.006
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Three-dimensional numerical simulation of the parametric properties of continuously rotating detonation engine

doi: 10.13224/j.cnki.jasp.2015.07.006

  • 1. Center for Combustion and Propulsion and Center for Application Physics Technology, College of Engineering, Peking University, Beijing 100871, China;

  • 2. State Key Laboratory of Turbulence and Complex System, College of Engineering, Peking University, Beijing 100871, China

  • Received Date: 2014-01-24
  • Publish Date: 2015-07-28
    Abstract
  • Based on Euler equations with one-step chemical reaction model in generalized coordinates, three-dimensional numerical simulation of the continuously rotating detonation engine (CRDE) were performed to investigate the effect of inlet total pressure on its parametric properties. It is found that the peak value of the detonation wave increases with the inlet total pressure; however, the choking ratio of the injection Laval nozzle along the head end is not influenced by it. Across the whole head end of CRDE, combustible gas is injected into the combustion chamber subsonically for different inlet total pressures. With the increase of inlet total pressure, the average pressure inside the chamber increases obviously, but the average axial velocity changes little. The mass flux, force and specific impulse of CRDE increase with the inlet total pressure. However, the ratio of the mass flux of CRDE to the maximum mass flux of the injection Laval nozzle remains the same under different inlet total pressures, almost equal to the choking ratio of the injection Laval nozzle. As the maximum mass flux of the injection Laval nozzle has a linear growth with the inlet total pressure, the above analysis provides a theory explanation about why the mass flux of CRDE increases linearly with the inlet total pressure.

     

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