Volume 30 Issue 12
Dec.  2015
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LI Kai-lun, WEI Yun, ZHANG Mei-lin, ZHANG Jia-zhong. CBS finite element method with approximate boundary conditions for panel flutter[J]. Journal of Aerospace Power, 2015, 30(12): 2848-2856. doi: 10.13224/j.cnki.jasp.2015.12.005
Citation: LI Kai-lun, WEI Yun, ZHANG Mei-lin, ZHANG Jia-zhong. CBS finite element method with approximate boundary conditions for panel flutter[J]. Journal of Aerospace Power, 2015, 30(12): 2848-2856. doi: 10.13224/j.cnki.jasp.2015.12.005

CBS finite element method with approximate boundary conditions for panel flutter

doi: 10.13224/j.cnki.jasp.2015.12.005
  • Received Date: 2014-04-27
  • Publish Date: 2015-12-28
  • In order to simplify the solving process of Euler equation for panel flutter, approximate boundary conditions were successfully introduced into CBS (characteristic-based split) finite element method to simulate the panel flutter. The impact of moving boundary was treated as normal boundary conditions for Euler equation. From analysis, it is found that:first, the results by approximate boundary conditions agree very well with those by moving boundary method, and the application of approximate boundary conditions is more convenient; then, Euler equation, rather than 3rd order piston theory is able to capture the pressure jump caused by sharp points at the ends of panels; finally, CBS finite element method with approximate boundary conditions has potentials and advantages in solving the fluid-structure interaction problems of small deformation of slender bodies in inviscid compressible flows.

     

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