Volume 32 Issue 7
Jul.  2017
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Effects of wall temperature on pseudo-shock oscillations in isolator[J]. Journal of Aerospace Power, 2017, 32(7): 1605-1612. doi: 10.13224/j.cnki.jasp.2017.07.010
Citation: Effects of wall temperature on pseudo-shock oscillations in isolator[J]. Journal of Aerospace Power, 2017, 32(7): 1605-1612. doi: 10.13224/j.cnki.jasp.2017.07.010

Effects of wall temperature on pseudo-shock oscillations in isolator

doi: 10.13224/j.cnki.jasp.2017.07.010
  • Received Date: 2015-11-03
  • Publish Date: 2017-07-28
  • To explore the complex flow mechanism in the scramjet isolator under different wall heat transfer, the effects of wall temperatures on the oscillation characteristics of pseudo-shock in the scramjet isolator were investigated with a two-order accuracy unsteady computational fluid dynamics code. The numerical results show that there is a close relationship between the wall pressure histories and the maximum upstream and downstream locations of the shock-train leading-edge. Moreover, it shows that the fluctuating pressure amplitudes increase and frequencies decrease with the wall temperature. The maximum value of wall pressure standard deviation occurs at the place where the shock-train leading-edge shocks/boundary layer interact. However, the maximum values of kinetic energy are mainly in the shear layer region of the separation bubble.

     

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