Hostname: page-component-cd9895bd7-mkpzs Total loading time: 0 Render date: 2024-12-25T05:43:38.312Z Has data issue: false hasContentIssue false
  • English
  • Français

Sound generation by shock–vortex interactions

Published online by Cambridge University Press:  10 February 1999

OSAMU INOUE  and
YUJI HATTORI
OSAMU INOUE
Affiliation:
Institute of Fluid Science, Tohoku University, Sendai 980-8577, Japan
YUJI HATTORI
Affiliation:
Institute of Fluid Science, Tohoku University, Sendai 980-8577, Japan
Get access Rights & Permissions [Opens in a new window]

Abstract

Two-dimensional, unsteady, compressible flow fields produced by the interactions between a single vortex or a pair of vortices and a shock wave are simulated numerically. The Navier–Stokes equations are solved by a finite difference method. The sixth-order-accurate compact Padé scheme is used for spatial derivatives, together with the fourth-order-accurate Runge–Kutta scheme for time integration. The detailed mechanics of the flow fields at an early stage of the interactions and the basic nature of the near-field sound generated by the interactions are studied. The results for both a single vortex and a pair of vortices suggest that the generation and the nature of sounds are closely related to the generation of reflected shock waves. The flow field differs significantly when the pair of vortices moves in the same direction as the shock wave than when opposite to it.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 380 , 10 February 1999 , pp. 81 - 116
Copyright
© 1999 Cambridge University Press

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)