Experimental study of turbulent transport in non-isothermal oscillating grids turbulence using particle image velocimetry

Alexander Eidelman; Tov Elperin; Nathan Kleeorin; Alexander Krein; Igor Rogachevskii; Julia Buchholz; Gerd Grünefeld

doi:10.1115/fedsm2003-45722

Experimental study of turbulent transport in non-isothermal oscillating grids turbulence using particle image velocimetry

Alexander Eidelman, Tov Elperin, Nathan Kleeorin, Alexander Krein, Igor Rogachevskii, Julia Buchholz, Gerd Grünefeld

Department of Mechanical Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

Abstract

An oscillating grids turbulence generator was constructed for studies of a new effect associated with turbulent transport of inertial particles - turbulent thermal diffusion. This phenomenon was predicted theoretically in Phys. Rev. Lett. 76, 224 (1996) and has been detected experimentally in oscillating grids turbulence with an imposed mean temperature gradient in air flow. This effect implies an additional mean flux of particles in the direction opposite to the mean temperature gradient and results in formation of large-scale inhomogeneities in the spatial distribution of particles. We used Particle Image Velocimetry to determine the turbulent velocity field and an Image Processing Technique to determine the spatial distribution of particles. Velocity distributions were measured in the flow generated with one and two grids in the Oscillating Grids Turbulence Generators at RWTH (Aachen) and BGU (Beer-Sheva). Analysis of the intensity of laser light Mie scattering by particles showed that they are accumulated in the vicinity of the minimum of the mean temperature of the surrounding fluid. The latter finding confirms the existence of the effect of turbulent thermal diffusion predicted theoretically.

Original language	English
Title of host publication	Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference
Subtitle of host publication	Volume 2, Part A, Symposia
Editors	A. Ogut, Y. Tsuji, M. Kawahashi
Publisher	American Society of Mechanical Engineers
Pages	377-384
Number of pages	8
ISBN (Print)	0791836967, 9780791836965
DOIs	https://doi.org/10.1115/fedsm2003-45722
State	Published - 1 Jan 2003
Event	4th ASME/JSME Joint Fluids Engineering Conference - Honolulu, HI, United States Duration: 6 Jul 2003 → 10 Jul 2003

Publication series

Name	Proceedings of the ASME/JSME Joint Fluids Engineering Conference
Volume	2 A

Conference

Conference	4th ASME/JSME Joint Fluids Engineering Conference
Country/Territory	United States
City	Honolulu, HI
Period	6/07/03 → 10/07/03

ASJC Scopus subject areas

Mechanical Engineering
Fluid Flow and Transfer Processes

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10.1115/fedsm2003-45722

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Eidelman, A., Elperin, T., Kleeorin, N., Krein, A., Rogachevskii, I., Buchholz, J., & Grünefeld, G. (2003). Experimental study of turbulent transport in non-isothermal oscillating grids turbulence using particle image velocimetry. In A. Ogut, Y. Tsuji, & M. Kawahashi (Eds.), Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference: Volume 2, Part A, Symposia (pp. 377-384). (Proceedings of the ASME/JSME Joint Fluids Engineering Conference; Vol. 2 A). American Society of Mechanical Engineers. https://doi.org/10.1115/fedsm2003-45722

Eidelman, Alexander ; Elperin, Tov ; Kleeorin, Nathan et al. / Experimental study of turbulent transport in non-isothermal oscillating grids turbulence using particle image velocimetry. Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference: Volume 2, Part A, Symposia. editor / A. Ogut ; Y. Tsuji ; M. Kawahashi. American Society of Mechanical Engineers, 2003. pp. 377-384 (Proceedings of the ASME/JSME Joint Fluids Engineering Conference).

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title = "Experimental study of turbulent transport in non-isothermal oscillating grids turbulence using particle image velocimetry",

abstract = "An oscillating grids turbulence generator was constructed for studies of a new effect associated with turbulent transport of inertial particles - turbulent thermal diffusion. This phenomenon was predicted theoretically in Phys. Rev. Lett. 76, 224 (1996) and has been detected experimentally in oscillating grids turbulence with an imposed mean temperature gradient in air flow. This effect implies an additional mean flux of particles in the direction opposite to the mean temperature gradient and results in formation of large-scale inhomogeneities in the spatial distribution of particles. We used Particle Image Velocimetry to determine the turbulent velocity field and an Image Processing Technique to determine the spatial distribution of particles. Velocity distributions were measured in the flow generated with one and two grids in the Oscillating Grids Turbulence Generators at RWTH (Aachen) and BGU (Beer-Sheva). Analysis of the intensity of laser light Mie scattering by particles showed that they are accumulated in the vicinity of the minimum of the mean temperature of the surrounding fluid. The latter finding confirms the existence of the effect of turbulent thermal diffusion predicted theoretically.",

author = "Alexander Eidelman and Tov Elperin and Nathan Kleeorin and Alexander Krein and Igor Rogachevskii and Julia Buchholz and Gerd Gr{\"u}nefeld",

year = "2003",

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doi = "10.1115/fedsm2003-45722",

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Eidelman, A, Elperin, T, Kleeorin, N, Krein, A, Rogachevskii, I, Buchholz, J & Grünefeld, G 2003, Experimental study of turbulent transport in non-isothermal oscillating grids turbulence using particle image velocimetry. in A Ogut, Y Tsuji & M Kawahashi (eds), Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference: Volume 2, Part A, Symposia. Proceedings of the ASME/JSME Joint Fluids Engineering Conference, vol. 2 A, American Society of Mechanical Engineers, pp. 377-384, 4th ASME/JSME Joint Fluids Engineering Conference, Honolulu, HI, United States, 6/07/03. https://doi.org/10.1115/fedsm2003-45722

Experimental study of turbulent transport in non-isothermal oscillating grids turbulence using particle image velocimetry. / Eidelman, Alexander; Elperin, Tov; Kleeorin, Nathan et al.
Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference: Volume 2, Part A, Symposia. ed. / A. Ogut; Y. Tsuji; M. Kawahashi. American Society of Mechanical Engineers, 2003. p. 377-384 (Proceedings of the ASME/JSME Joint Fluids Engineering Conference; Vol. 2 A).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution › peer-review

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AU - Eidelman, Alexander

AU - Elperin, Tov

AU - Kleeorin, Nathan

AU - Krein, Alexander

AU - Rogachevskii, Igor

AU - Buchholz, Julia

AU - Grünefeld, Gerd

PY - 2003/1/1

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N2 - An oscillating grids turbulence generator was constructed for studies of a new effect associated with turbulent transport of inertial particles - turbulent thermal diffusion. This phenomenon was predicted theoretically in Phys. Rev. Lett. 76, 224 (1996) and has been detected experimentally in oscillating grids turbulence with an imposed mean temperature gradient in air flow. This effect implies an additional mean flux of particles in the direction opposite to the mean temperature gradient and results in formation of large-scale inhomogeneities in the spatial distribution of particles. We used Particle Image Velocimetry to determine the turbulent velocity field and an Image Processing Technique to determine the spatial distribution of particles. Velocity distributions were measured in the flow generated with one and two grids in the Oscillating Grids Turbulence Generators at RWTH (Aachen) and BGU (Beer-Sheva). Analysis of the intensity of laser light Mie scattering by particles showed that they are accumulated in the vicinity of the minimum of the mean temperature of the surrounding fluid. The latter finding confirms the existence of the effect of turbulent thermal diffusion predicted theoretically.

AB - An oscillating grids turbulence generator was constructed for studies of a new effect associated with turbulent transport of inertial particles - turbulent thermal diffusion. This phenomenon was predicted theoretically in Phys. Rev. Lett. 76, 224 (1996) and has been detected experimentally in oscillating grids turbulence with an imposed mean temperature gradient in air flow. This effect implies an additional mean flux of particles in the direction opposite to the mean temperature gradient and results in formation of large-scale inhomogeneities in the spatial distribution of particles. We used Particle Image Velocimetry to determine the turbulent velocity field and an Image Processing Technique to determine the spatial distribution of particles. Velocity distributions were measured in the flow generated with one and two grids in the Oscillating Grids Turbulence Generators at RWTH (Aachen) and BGU (Beer-Sheva). Analysis of the intensity of laser light Mie scattering by particles showed that they are accumulated in the vicinity of the minimum of the mean temperature of the surrounding fluid. The latter finding confirms the existence of the effect of turbulent thermal diffusion predicted theoretically.

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PB - American Society of Mechanical Engineers

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Y2 - 6 July 2003 through 10 July 2003

ER -

Eidelman A, Elperin T, Kleeorin N, Krein A, Rogachevskii I, Buchholz J et al. Experimental study of turbulent transport in non-isothermal oscillating grids turbulence using particle image velocimetry. In Ogut A, Tsuji Y, Kawahashi M, editors, Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference: Volume 2, Part A, Symposia. American Society of Mechanical Engineers. 2003. p. 377-384. (Proceedings of the ASME/JSME Joint Fluids Engineering Conference). doi: 10.1115/fedsm2003-45722

Experimental study of turbulent transport in non-isothermal oscillating grids turbulence using particle image velocimetry

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