Volume 34 Issue 10
Oct.  2019
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DAI Chunliang, ZHANG Kunyuan. Optimization design of the inward turning inlet in the Mach number 3-6 wide velocity domain[J]. Journal of Aerospace Power, 2019, 34(10): 2191-2202. doi: 10.13224/j.cnki.jasp.2019.10.012
Citation: DAI Chunliang, ZHANG Kunyuan. Optimization design of the inward turning inlet in the Mach number 3-6 wide velocity domain[J]. Journal of Aerospace Power, 2019, 34(10): 2191-2202. doi: 10.13224/j.cnki.jasp.2019.10.012
shu

Optimization design of the inward turning inlet in the Mach number 3-6 wide velocity domain

doi: 10.13224/j.cnki.jasp.2019.10.012
  • 1.

    School of Mechanical Engineering,Nanjing University of Science and Technology,Nanjing 210094,China

  • 2.

    College of Power and Energy Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China

  • Received Date: 2019-02-26
  • Publish Date: 2019-10-28
    Abstract
  • Based on the parameterization study of the axisymmetric basic flowfield, a variable center body with properly small radius was selected, then the sensitivity analysis of other design parameters was conducted to obtain the influence law of design parameters on the overall performance of the basic flowfield. This showed that the coefficient c had the most obvious effect, and the coupling effect between various design parameters was also significant. The sample database was used to construct the corresponding neural network approximate model, and the three-objective optimization of the axisymmetric basic flowfield at Mach number of 6 was carried out in combination with the neighborhood cultivation multi-objective genetic algorithm. After the optimization, the internal compression ratio in the basic flowfield reduced by 17.7%, the total pressure recovery coefficient increased by 2.3%, and the static pressure ratio increased by 7.1%. Based on the optimization results, the inward turning inlet profile was designed. The results from its viscous numerical simulation at Mach number of 3-6 show that the optimized inward turning inlet can start normally at Mach number of 3, and has higher compression, better flow capture ability and total pressure recovery performance at Mach number of 4-6.

     

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