Acoustic damping rate measurements in binary mixtures of atomic species via transient-grating spectroscopy

Yuanyuan Li; William L. Roberts; Michael S. Brown; James R. Gord

doi:10.1007/s00348-005-1012-6

Acoustic damping rate measurements in binary mixtures of atomic species via transient-grating spectroscopy

Yuanyuan Li, William L. Roberts^*, Michael S. Brown, James R. Gord

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

3 Scopus citations

Abstract

The objective of this work is to investigate the ability of transient-grating spectroscopy (TGS) to measure accurately the acoustic damping rate by analyzing the temporal behavior of laser-induced gratings. Experiments are performed in a binary gaseous mixture, with a trace amount of NO ₂, as a function of both composition and pressure. Measured and theoretically calculated acoustic damping rates are compared using both a classical model and a more comprehensive model that included additional diffusive mechanisms. The TGS technique demonstrated here provides a nearly instantaneous measurement with reasonably high spatial resolution. The experimental data agree well with theoretical predictions.

Original language	English (US)
Pages (from-to)	687-693
Number of pages	7
Journal	Experiments in Fluids
Volume	39
Issue number	4
DOIs	https://doi.org/10.1007/s00348-005-1012-6
State	Published - Oct 1 2005
Externally published	Yes

Bibliographical note

Generated from Scopus record by KAUST IRTS on 2023-09-20

Keywords

Acoustic dissipation
Laser-induced thermal acoustics
Optical diagnostics
Transient-grating spectroscopy

ASJC Scopus subject areas

Computational Mechanics
Mechanics of Materials
General Physics and Astronomy
Fluid Flow and Transfer Processes

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10.1007/s00348-005-1012-6

Cite this

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title = "Acoustic damping rate measurements in binary mixtures of atomic species via transient-grating spectroscopy",

abstract = "The objective of this work is to investigate the ability of transient-grating spectroscopy (TGS) to measure accurately the acoustic damping rate by analyzing the temporal behavior of laser-induced gratings. Experiments are performed in a binary gaseous mixture, with a trace amount of NO 2, as a function of both composition and pressure. Measured and theoretically calculated acoustic damping rates are compared using both a classical model and a more comprehensive model that included additional diffusive mechanisms. The TGS technique demonstrated here provides a nearly instantaneous measurement with reasonably high spatial resolution. The experimental data agree well with theoretical predictions.",

keywords = "Acoustic dissipation, Laser-induced thermal acoustics, Optical diagnostics, Transient-grating spectroscopy",

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AU - Roberts, William L.

AU - Brown, Michael S.

AU - Gord, James R.

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N2 - The objective of this work is to investigate the ability of transient-grating spectroscopy (TGS) to measure accurately the acoustic damping rate by analyzing the temporal behavior of laser-induced gratings. Experiments are performed in a binary gaseous mixture, with a trace amount of NO 2, as a function of both composition and pressure. Measured and theoretically calculated acoustic damping rates are compared using both a classical model and a more comprehensive model that included additional diffusive mechanisms. The TGS technique demonstrated here provides a nearly instantaneous measurement with reasonably high spatial resolution. The experimental data agree well with theoretical predictions.

AB - The objective of this work is to investigate the ability of transient-grating spectroscopy (TGS) to measure accurately the acoustic damping rate by analyzing the temporal behavior of laser-induced gratings. Experiments are performed in a binary gaseous mixture, with a trace amount of NO 2, as a function of both composition and pressure. Measured and theoretically calculated acoustic damping rates are compared using both a classical model and a more comprehensive model that included additional diffusive mechanisms. The TGS technique demonstrated here provides a nearly instantaneous measurement with reasonably high spatial resolution. The experimental data agree well with theoretical predictions.

KW - Acoustic dissipation

KW - Laser-induced thermal acoustics

KW - Optical diagnostics

KW - Transient-grating spectroscopy

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JF - Experiments in Fluids

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ER -

Acoustic damping rate measurements in binary mixtures of atomic species via transient-grating spectroscopy

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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