Three-Dimensional Characterization of a Pure Thermal Plume

Minh Vuong Pham; Frédéric Plourde; Son Doan Kim

doi:10.1115/1.1863275

Journal of Heat Transfer | Volume 127 | Issue 6 | Research Paper

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RESEARCH PAPERS: Natural and Mixed Convection

Three-Dimensional Characterization of a Pure Thermal Plume

Minh Vuong Pham, Ph.D. Student, Frédéric Plourde, Senior CNRS Scientist and Son Doan Kim, Professor

[+] Author and Article Information

Minh Vuong Pham, Frédéric Plourde, Son Doan Kim

Laboratoire d’Etudes Thermiques, Ecole Nationale Supérieure de Mécanique et d’Aérotechnique, Téléport 2, 1 Avenue Clément Ader, BP 40109, 86961 Futuroscope Cedex, France

J. Heat Transfer 127(6), 624-636 (Jun 06, 2005) (13 pages) doi:10.1115/1.1863275 History: Received September 01, 2004; Revised November 24, 2004; Online June 06, 2005

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Figures

Schematic of thermal plume experiment

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Measurement setup using (a) classical 2D PIV technique and (b) stereoscopic PIV technique

View Large | Save Figure | Download Slide (.ppt)

Radial profiles of the U_z̄ mean axial velocity component and λ plume width change with regard to z

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Normalized radial profiles of the u_z mean axial velocity component

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Change of the normalized ū_z,c/ū_z,max mean axial velocity component along the geometrical axis

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Radial profiles of mean turbulent intensities: (a) Vertical velocity turbulent intensity, (b) radial velocity turbulent intensity, (c) circumferential velocity turbulent intensity, (d) I_t velocity turbulent intensity

View Large | Save Figure | Download Slide (.ppt)

Mean turbulent intensity distribution: (a) Contour I_t in several planes, (b) variation of I_t along the geometrical axis

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Contour of instantaneous circumferential vorticity field close to the heating source

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Contour of instantaneous circumferential vorticity field far from the heating source

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Instantaneous velocity field of thermal plume obtained from stereoscopic PIV at z=5.0 during (a) expulsion phase and (b) contraction phase

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Balance of mean momentum: (a) at z=2.0, (b) at z=5.0

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Schematic of entrainment measurement: (a) Differential method, (a) direct method

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Mean velocity from PIV using two different time intervals between images: (a) Short time of 2 ms and (b) long time of 20 ms

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Contour of mean vertical velocity obtained by the stereoscopic measurements

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Variation of the flow rate along height: (a) Total flow rate, (b) entrained flow rate

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Variation of entrainment coefficient along vertical axis

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Pham M, Plourde F, Kim S. Three-Dimensional Characterization of a Pure Thermal Plume. ASME. J. Heat Transfer. 2005;127(6):624-636. doi:10.1115/1.1863275.

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Three-Dimensional Characterization of a Pure Thermal Plume

References

Figures

Schematic of thermal plume experiment

Measurement setup using (a) classical 2D PIV technique and (b) stereoscopic PIV technique

Radial profiles of the U_z̄ mean axial velocity component and λ plume width change with regard to z

Normalized radial profiles of the u_z mean axial velocity component

Change of the normalized ū_z,c/ū_z,max mean axial velocity component along the geometrical axis

Radial profiles of mean turbulent intensities: (a) Vertical velocity turbulent intensity, (b) radial velocity turbulent intensity, (c) circumferential velocity turbulent intensity, (d) I_t velocity turbulent intensity

Mean turbulent intensity distribution: (a) Contour I_t in several planes, (b) variation of I_t along the geometrical axis

Contour of instantaneous circumferential vorticity field close to the heating source

Contour of instantaneous circumferential vorticity field far from the heating source

Instantaneous velocity field of thermal plume obtained from stereoscopic PIV at z=5.0 during (a) expulsion phase and (b) contraction phase

Balance of mean momentum: (a) at z=2.0, (b) at z=5.0

Schematic of entrainment measurement: (a) Differential method, (a) direct method

Mean velocity from PIV using two different time intervals between images: (a) Short time of 2 ms and (b) long time of 20 ms

Contour of mean vertical velocity obtained by the stereoscopic measurements

Variation of the flow rate along height: (a) Total flow rate, (b) entrained flow rate

Variation of entrainment coefficient along vertical axis

Tables

Errata

Discussions

Related Content

Journals

Conference Proceedings

eBooks

Three-Dimensional Characterization of a Pure Thermal Plume

References

Figures

Schematic of thermal plume experiment

Measurement setup using (a) classical 2D PIV technique and (b) stereoscopic PIV technique

Radial profiles of the Uz̄ mean axial velocity component and λ plume width change with regard to z

Normalized radial profiles of the uz mean axial velocity component

Change of the normalized ūz,c/ūz,max mean axial velocity component along the geometrical axis

Radial profiles of mean turbulent intensities: (a) Vertical velocity turbulent intensity, (b) radial velocity turbulent intensity, (c) circumferential velocity turbulent intensity, (d) It velocity turbulent intensity

Mean turbulent intensity distribution: (a) Contour It in several planes, (b) variation of It along the geometrical axis

Contour of instantaneous circumferential vorticity field close to the heating source

Contour of instantaneous circumferential vorticity field far from the heating source

Instantaneous velocity field of thermal plume obtained from stereoscopic PIV at z=5.0 during (a) expulsion phase and (b) contraction phase

Balance of mean momentum: (a) at z=2.0, (b) at z=5.0

Schematic of entrainment measurement: (a) Differential method, (a) direct method

Mean velocity from PIV using two different time intervals between images: (a) Short time of 2 ms and (b) long time of 20 ms

Contour of mean vertical velocity obtained by the stereoscopic measurements

Variation of the flow rate along height: (a) Total flow rate, (b) entrained flow rate

Variation of entrainment coefficient along vertical axis

Tables

Errata

Discussions

Related Content

Journals

Conference Proceedings

eBooks

Radial profiles of the U_z̄ mean axial velocity component and λ plume width change with regard to z

Normalized radial profiles of the u_z mean axial velocity component

Change of the normalized ū_z,c/ū_z,max mean axial velocity component along the geometrical axis

Radial profiles of mean turbulent intensities: (a) Vertical velocity turbulent intensity, (b) radial velocity turbulent intensity, (c) circumferential velocity turbulent intensity, (d) I_t velocity turbulent intensity

Mean turbulent intensity distribution: (a) Contour I_t in several planes, (b) variation of I_t along the geometrical axis