Volume 33 Issue 11
Nov.  2018
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Aerodynamic optimization design of mixed exhaust nozzle based on FFD technique[J]. Journal of Aerospace Power, 2018, 33(11): 2796-2801. doi: 10.13224/j.cnki.jasp.2018.11.026
Citation: Aerodynamic optimization design of mixed exhaust nozzle based on FFD technique[J]. Journal of Aerospace Power, 2018, 33(11): 2796-2801. doi: 10.13224/j.cnki.jasp.2018.11.026

Aerodynamic optimization design of mixed exhaust nozzle based on FFD technique

doi: 10.13224/j.cnki.jasp.2018.11.026
  • Received Date: 2017-07-20
  • Publish Date: 2018-11-28
  • As a mixed exhaust nozzle was taken as the research object, the mapping relation between the arbitrary shape deformation volume and a mixed exhaust nozzle sketch was built. Through movement of the control points, synchronously large curvature deformation of the profiles and grid was realized. Whats more, experimental samples were established with application of the optimal Latin hypercube design (OLHD) method. On this basis, as the free form deformation (FFD) and CFD modules were driven by the Isight software, all the sample points were calculated. According to the simulation results, optimum sketch was selected with 0.6% increase of the thrust coefficient and 0.6% reduction of the total pressure loss. Finally, multi-lines and arcs were adopted to parameterize the optimum sketch with no performance degeneration, which can be used in engineering practice.

     

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