Volume 27 Issue 8
Aug.  2012
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CHEN Ti, LIU Wei-dong, FAN Xiao-qiang. Investigation on unsteady characteristics of unstarted two-dimensional inlet flow using hybrid LES/RANS method[J]. Journal of Aerospace Power, 2012, 27(8): 1792-1800.
Citation: CHEN Ti, LIU Wei-dong, FAN Xiao-qiang. Investigation on unsteady characteristics of unstarted two-dimensional inlet flow using hybrid LES/RANS method[J]. Journal of Aerospace Power, 2012, 27(8): 1792-1800.

Investigation on unsteady characteristics of unstarted two-dimensional inlet flow using hybrid LES/RANS method

  • Received Date: 2011-09-22
  • Publish Date: 2012-08-28
  • A hybrid large-eddy simulation/Reynolds-averaged Navier-Stokes(LES/RANS) method together with 5th order WENO(weighted essentially non-oscillatory) scheme were used to caculate an unstarted two-dimensional inlet with contraction ratio of 1.5 in a Mach 3 freestream.The unsteady flow field in the unstarted inlet was captured.The result shows that current numerical method can predict mean adiabatic wall temperature,friction velocity and Reynolds stress reasonably well.Some low-frequency motion exist in the shock system and separation zone in the unstarted field at large time-space scale.The dominant frequency is close to its counterpart in classic shock/turbulent boundary layer interaction problem.The inlet switches to started state intermittently.

     

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