Characteristic boundary conditions with finite-volume ENO scheme for aeroacoustic simulations

  • Authors:

  • Yongseok Kim;Yoshiaki Nakamura

  • Affiliations:

  • Department of Aerospace Engineering, Nagoya University, Nagoya, Chikusa-ku, Japan;Department of Aerospace Engineering, Nagoya University, Nagoya, Chikusa-ku, Japan

  • Venue:
  • International Journal of Computational Fluid Dynamics
  • Year:
  • 2007

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Abstract

Characteristic boundary algorithms coupled with high-order modified-flux-approach ENO (essentially non-oscillatory) schemes are proposed in generalized coordinates for the computation of aeroacoustic problems. So far most of the characteristic algorithms have been used along with high-order finite difference schemes. Here in this study finite volume MFA-ENO schemes with characteristic boundary conditions are proposed, and examined to validate the accuracy by applying to several test problems, including the problem of acoustic waves scattered by a circular cylinder and the problem of vortex convection through the outlet boundary. Non-reflecting boundary conditions to prevent acoustic and vorticity waves to be reflected at the boundary are also analysed.