RECONSTRUCTING THREE-DIMENSIONAL TEMPERATURE AND FLUID VELOCITY VECTOR FIELDS FROM ACOUSTIC TRANSMISSION MEASUREMENTS.

Steven A. Johnson, James F Greenleaf, M. Tanaka, G. Flandro

Research output: Contribution to journalArticle

40 Citations (Scopus)

Abstract

A theory with supporting experimental evidence is presented for reconstructing the three-dimensional fluid-velocity vector field and temperature field in a moving medium from a set of measurements of the acoustic propagation time between multiple transmitter and receiver locations on a stationary boundary surface. The inversion of the integrals relating the acoustic propagation path to the propagation time measurements is obtained by linearization and discrete approximation of the integrals and application of an algebraic reconstruction technique (ART). The inversion of these integrals provides reconstructions of both acoustic refractive index and vector fluid velocity. Since this technique does not require either the presence of scattering centers or the optical transparency of the medium, it may be applied in many cases (i. e. , turbid, opaque or chemically pure media) where Doppler or optical (e. g. , laser holography) methods fail.

Original languageEnglish (US)
Pages (from-to)3-15
Number of pages13
JournalISA Transactions
Volume16
Issue number3
StatePublished - 1977

Fingerprint

Velocity Field
acoustic propagation
Vector Field
Acoustics
Propagation
Fluid
Three-dimensional
Fluids
acoustics
fluids
Inversion
inversions
Holography
Discrete Approximation
linearization
Transparency
Doppler
Time measurement
Temperature Field
Linearization

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

Cite this

RECONSTRUCTING THREE-DIMENSIONAL TEMPERATURE AND FLUID VELOCITY VECTOR FIELDS FROM ACOUSTIC TRANSMISSION MEASUREMENTS. / Johnson, Steven A.; Greenleaf, James F; Tanaka, M.; Flandro, G.

In: ISA Transactions, Vol. 16, No. 3, 1977, p. 3-15.

Research output: Contribution to journalArticle

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