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Article
Visualization of the energy flux in an ensonified fluid-loaded elastic sphere
Journal of the Acoustical Society of America
  • Cleon Dean, Georgia Southern University
  • James P. Braselton, Georgia Southern University
Document Type
Article
Publication Date
5-6-1998
DOI
10.1121/1.421878
Disciplines
Abstract

The energy flux in an ensonified fluid‐loaded elastic sphere is visualized by its Poynting vector field in both its instantaneous real and time‐averaged complex forms. The instantaneous Poynting vector field is shown in both freeze‐frame and animated versions. The instantaneous Poynting vector field can be used to follow the propagation of elastodynamic waves in the elastic sphere. The complex Poynting vector field, which is a time‐averaged representation of the energy flow, is shown in terms of separate real and imaginary parts. The real part of the complex Poynting vector field shows the traveling wave component of the elastodynamic wave in the ensonified sphere. The imaginary part of the complex Poynting vector field shows the standing wave part of the elastodynamic wave in the ensonified sphere. The patterns formed by the Poynting vector field, in both its instantaneous and the real and imaginary parts of the complex form, can be identified with the various modes of the ensonified sphere and used to explain the physical processes going on inside the ensonified sphere.

Comments

Copyright 1998 Acoustical Society of America. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the Acoustical Society of America.

Citation Information
Cleon Dean and James P. Braselton. "Visualization of the energy flux in an ensonified fluid-loaded elastic sphere" Journal of the Acoustical Society of America Vol. 103 Iss. No. 5, Pt. 2 (1998) p. 2805
Available at: http://works.bepress.com/james_braselton/174/