Magnetohydrodynamic and Thermoacoustic Mechanisms for Generation of Sound in Seawater

  • S. L. Garrett
  • T. B. Gabrielson


Conventional techniques for producing high-amplitude sound rely on the oscillatory motion of solid materials to generate the requisite volumetric velocity. Material properties limit the displacement of these solids; hence, further increases in radiated power require transducers of larger surface area. This paper examines magnetohydrodynamic and thermoacoustic methods for moving fluid directly as a means of producing more compact projectors with source strengths that are comparable to conventional projector designs. In addition, test results from small prototypes of each transducer are summarized.


Prandtl Number Standing Wave Helmholtz Resonator Naval Postgraduate School Thermoacoustic Engine 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1991

Authors and Affiliations

  • S. L. Garrett
    • 1
  • T. B. Gabrielson
    • 2
  1. 1.Physics Department — Code 61 GxNaval Postgraduate SchoolMontereyUSA
  2. 2.Naval Air Development Center — Code 5044WarminsterUSA

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