Empirical refinements to boundary layer transition noise models

Richard Chostner Marboe, Gerald C. Lauchle

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

We have discussed two similar theoretical models for direct radiation from a transitioning boundary layer zone. The predicted radiated noise levels due to the transition process are sensitive to several factors which will require such empirical description in order to practically use the models, whether applied to flow over a wall, around a body of revolution, or over an airfoil or hydrofoil. They include: the effect of the dynamics of the spot substructures on the normal surface velocity accurate displacement thickness rise time, and spatially-dependent normal velocity measurements; and effects of adverse pressure gradient including the possibility of laminar separation prior to transition. The radiated noise component magnitude can be added to the convective and low wavenumber contribution to find the wall pressure forcing spectrum as input to the fluid-structure interaction problems of interest.

Original languageEnglish (US)
Title of host publicationProgress in Noise Control for Industry
EditorsJoseph M. Cuschieri, Stewart A.L. Glegg, David M. Yeager
PublisherPubl by Inst of Noise Control Engineering
Pages209-214
Number of pages6
ISBN (Print)0931784271
StatePublished - Jan 1 1994
EventProceedings of the 1994 National Conference on Noise Control Engineering - Fort Lauderdale, FL, USA
Duration: May 1 1994May 4 1994

Publication series

NameProceedings - National Conference on Noise Control Engineering

Other

OtherProceedings of the 1994 National Conference on Noise Control Engineering
CityFort Lauderdale, FL, USA
Period5/1/945/4/94

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All Science Journal Classification (ASJC) codes

  • Acoustics and Ultrasonics
  • Engineering(all)

Cite this

Marboe, R. C., & Lauchle, G. C. (1994). Empirical refinements to boundary layer transition noise models. In J. M. Cuschieri, S. A. L. Glegg, & D. M. Yeager (Eds.), Progress in Noise Control for Industry (pp. 209-214). (Proceedings - National Conference on Noise Control Engineering). Publ by Inst of Noise Control Engineering.