An energy source simulation method to predict sound radiation

D. W. Herrin, T. W. Wu, A. F. Seybert

Research output: Contribution to journalConference articlepeer-review

1 Scopus citations


An energy source simulation method (ESSM) has been developed to determine sound energy density. Using this approach, a specified intensity boundary condition on the surface of a vibrating body is approximated by superimposing energy density sources placed inside the body. The unknown strengths for these sources are then found by minimizing the error on the boundary, using a least squares technique. The superposition of these energy density sources should then approximate the sound radiating from the body. The approach was evaluated in two-dimensions for a circle, square, and a more general geometry. The ESSM proved an excellent tool for predicting the energy density provided that power radiated uniformly in all directions. However, the ESSM could not accurately predict the directional characteristics of the energy density field if the power radiated significantly higher from one side of an object than other sides.

Original languageEnglish
JournalSAE Technical Papers
StatePublished - 2001
EventNoise and Vibration Conference and Exposition - Traverse City, MI, United States
Duration: Apr 30 2001May 3 2001

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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