A New Method for Extracting Resonance Information in Acoustic Wave Resonance Scattering

음향파 공명 산란의 새로운 해석방법

  • 이희남 (한국전력기술(주), 원자로설계개발단) ;
  • 박영진 (한국과학기술원 기계공학과)
  • Published : 1999.04.01

Abstract

A new method is proposed for the isolation of resonances from scattered waves for the isolaton of resonances from scattered waves for acoustic wave resonance scattering problems. The resonance scattering function consisting purely of resonance information is defined. Acoustic wave scattering from a variety of submerged bodies is numerically analyzed. The classical resonance scattering theory (RST) and the new method compute identical magnitudes of the resonances from each partial wave, however, the phases are significantly different. The exact $\pi$-radians phase shifts through the resonance and anti-resonance frequencies show that the proposed method properly extracts the vibrational resonance information of the scatterer. Due to the differences in phases of the resonances from each partial wave, the new method and RST generate different total resonance spectra.

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