Please use this identifier to cite or link to this item:
|Title:||Self-excited supersonic cavity flow instabilities as aerodynamic noise sources|
|Citation:||International Journal of Aeroacoustics, 2006, 5 (4), pp.335-360|
|Abstract:||A turbulent cavity flow at Mach 1.5 and 2.5 is modelled to study the flow instability and the associated aerodynamic noise generation. The short-time averaged Navier-Stokes equations, coupled with a ķ –ώ turbulence model, are solved to predict the large-scale time-dependent flow. Values of the cavity wall pressure, drag, streamwise velocity and density are in good agreement with past measurements and the results of other computations. The noise generation physics of the unsteady flow is addressed by estimating the noise source strength in a Lighthill acoustic analogy. The time-dependent flow predictions highlighted the upstream and downstream cavity edges as areas of large flow unsteadiness. The same areas are identified by the acoustic analogy as the dominant noise source regions in this flow.|
|Rights:||This is the author's final draft of the paper published as International Journal of Aeroacoustics, 2006, 5 (4), pp.335-360. The final version is available from http://multi-science.metapress.com/content/c46574350646858p/. Doi: 10.1260/147547206779379921|
|Appears in Collections:||Published Articles, Dept. of Engineering|
Items in LRA are protected by copyright, with all rights reserved, unless otherwise indicated.