Radiation from a submerged thermoacoustic source

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Radiation of sound from a submerged and freely flooded tube, closed at one end and open at the other, follows well-known relationships if the exit dimension is much smaller than a wavelength. If the tube is instead filled with a gas and submerged in water, the radiated power is higher than that of the flooded tube for the same internal acoustic pressure. If the density-sound-speed product, pc, is much higher in the liquid than in the gas, as would normally be the case, then the radiated power is greater by the factor l/0.36(ka)2, where k is the wave number in the water and a is the tube radius. This provides an ideal setting for construction of an underwater acoustic source using a standing-wave thermoacoustic driver since this driver is force limited rather than displacement limited. The performance is ultimately limited by the hydrostatic pressure and the dimensions of the tube.

Original languageEnglish (US)
Pages (from-to)2628-2636
Number of pages9
JournalJournal of the Acoustical Society of America
Volume90
Issue number5
DOIs
StatePublished - Nov 1991

Fingerprint

tubes
radiation
acoustics
underwater acoustics
gases
standing waves
hydrostatic pressure
water
Acoustics
Water
Sound
Waves
Radiation
Gas
radii
products
liquids
wavelengths
Exit
Liquid

All Science Journal Classification (ASJC) codes

  • Arts and Humanities (miscellaneous)
  • Acoustics and Ultrasonics

Cite this

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title = "Radiation from a submerged thermoacoustic source",
abstract = "Radiation of sound from a submerged and freely flooded tube, closed at one end and open at the other, follows well-known relationships if the exit dimension is much smaller than a wavelength. If the tube is instead filled with a gas and submerged in water, the radiated power is higher than that of the flooded tube for the same internal acoustic pressure. If the density-sound-speed product, pc, is much higher in the liquid than in the gas, as would normally be the case, then the radiated power is greater by the factor l/0.36(ka)2, where k is the wave number in the water and a is the tube radius. This provides an ideal setting for construction of an underwater acoustic source using a standing-wave thermoacoustic driver since this driver is force limited rather than displacement limited. The performance is ultimately limited by the hydrostatic pressure and the dimensions of the tube.",
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Radiation from a submerged thermoacoustic source. / Gabrielson, Thomas B.

In: Journal of the Acoustical Society of America, Vol. 90, No. 5, 11.1991, p. 2628-2636.

Research output: Contribution to journalArticle

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