Analysis of Density Distribution for Unsteady Butane Flow Using Three-Dimensional Digital Speckle Tomography

Transient and asymmetric density distributions have been investigated by three-dimensional digital speckle tomography. Multiple CCD images captured movements of speckles in three angles of view simultaneously because the flows were asymmetric and transient. The speckle movements between no flow and...

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Published inJournal of mechanical science and technology Vol. 18; no. 7; pp. 1213 - 1221
Main Authors Ko, Han Seo, Park, Kwang-Hee, Kim, Yong-Jae
Format Journal Article
LanguageEnglish
Published Seoul 대한기계학회 01.07.2004
Springer Nature B.V
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ISSN1738-494X
1226-4865
1976-3824
DOI10.1007/BF02983296

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Abstract Transient and asymmetric density distributions have been investigated by three-dimensional digital speckle tomography. Multiple CCD images captured movements of speckles in three angles of view simultaneously because the flows were asymmetric and transient. The speckle movements between no flow and downward butane flow from a circular half opening have been calculated by a cross-correlation tracking method so that those distances can be transferred to deflection angles of laser rays for density gradients. The three-dimensional density fields have been reconstructed from the deflection angles by a real-time multiplicative algebraic reconstruction technique (MART).
AbstractList Transient and asymmetric density distributions have been investigated by three-dimensional digital speckle tomography. Multiple CCD images captured movements of speckles in three angles of view simultaneously because the flows were asymmetric and transient. The speckle movements between no flow and downward butane flow from a circular half opening have been calculated by a cross-correlation tracking method so that those distances can be transferred to deflection angles of laser rays for density gradients. The three-dimensional density fields have been reconstructed from the deflection angles by a real-time multiplicative algebraic reconstruction technique (MART).
Transient and asymmetric density distributions have been investigated by three-dimensional digital speckle tomography. Multiple CCD images captured movements of speckles in three angles of view simultaneously because the flows were asymmetric and transient. The speckle movements between no flow and downward butane flow from a circular half opening have been calculated by a cross-correlation tracking method so that those distances can be transferred to deflection angles of laser rays for density gradients. The three-dimensional density fields have been reconstructed from the deflection angles by a real-time multiplicative algebraic reconstruction technique (MART). KCI Citation Count: 1
Transient and asymmetric density distributions have been investigated by three-dimensional digital speckle tomography. Multiple CCD images captured movements of speckles in three angles of view simultaneously because the flows were asymmetric and transient. The speckle movements between no flow and downward butane flow from a circular half opening have been calculated by a cross-correlation tracking method so that those distances can be transferred to deflection angles of laser rays for density gradients. The three-dimensional density fields have been reconstructed from the deflection angles by a real-time multiplicative algebraic reconstruction technique (MART).[PUBLICATION ABSTRACT]
Author Han Seo Ko
Yong-Jae Kim
Kwang-Hee Park
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Cites_doi 10.1007/s003480050378
10.1007/BF00189017
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Snippet Transient and asymmetric density distributions have been investigated by three-dimensional digital speckle tomography. Multiple CCD images captured movements...
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SubjectTerms Butanes
Charge coupled devices
Cross correlation
Deflection
Density distribution
Density gradients
Digital
Digital imaging
Movements
Skewed distributions
Three dimensional
Three dimensional flow
Tomography
기계공학
Title Analysis of Density Distribution for Unsteady Butane Flow Using Three-Dimensional Digital Speckle Tomography
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