Simultaneous measurements of velocity and density in buoyancy-driven mixing
Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing partic...
Ausführliche Beschreibung
Gespeichert in:
| Autor*in: |
Ramaprabhu, P. [verfasserIn] |
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| Format: |
Artikel |
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| Sprache: |
Englisch |
| Erschienen: |
2003 |
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| Schlagwörter: |
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| Anmerkung: |
© Springer-Verlag 2003 |
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| Übergeordnetes Werk: |
Enthalten in: Experiments in fluids - Springer-Verlag, 1983, 34(2003), 1 vom: Jan., Seite 98-106 |
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| Übergeordnetes Werk: |
volume:34 ; year:2003 ; number:1 ; month:01 ; pages:98-106 |
| Links: |
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| DOI / URN: |
10.1007/s00348-002-0538-0 |
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| Katalog-ID: |
OLC2074341849 |
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| 520 | |a Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing particle displacements from correlation peaks of intensity fields. Different concentrations of seed particles are used in the two streams of different temperature (density) fluids, and a local measure of the density is obtained by spatially averaging over an interrogation window. Good agreement is reported between the first- and second-order statistics for density obtained from this technique and from a thermocouple. Velocity–density correlations computed by cross-correlating individual time series are presented. The errors in the density measurements are quantified and analyzed, and the issue of spatial resolution is also discussed. Our purpose for this paper is to introduce the PIV-S method and validate its accuracy against corresponding thermocouple measurements. | ||
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10.1007/s00348-002-0538-0 doi (DE-627)OLC2074341849 (DE-He213)s00348-002-0538-0-p DE-627 ger DE-627 rakwb eng 620 530 VZ 530 VZ Ramaprabhu, P. verfasserin aut Simultaneous measurements of velocity and density in buoyancy-driven mixing 2003 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2003 Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing particle displacements from correlation peaks of intensity fields. Different concentrations of seed particles are used in the two streams of different temperature (density) fluids, and a local measure of the density is obtained by spatially averaging over an interrogation window. Good agreement is reported between the first- and second-order statistics for density obtained from this technique and from a thermocouple. Velocity–density correlations computed by cross-correlating individual time series are presented. The errors in the density measurements are quantified and analyzed, and the issue of spatial resolution is also discussed. Our purpose for this paper is to introduce the PIV-S method and validate its accuracy against corresponding thermocouple measurements. Time Series Velocity Field Particle Image Velocimetry Intensity Field Density Measurement Andrews, M. aut Enthalten in Experiments in fluids Springer-Verlag, 1983 34(2003), 1 vom: Jan., Seite 98-106 (DE-627)130443794 (DE-600)710083-8 (DE-576)015977404 0723-4864 nnns volume:34 year:2003 number:1 month:01 pages:98-106 https://doi.org/10.1007/s00348-002-0538-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_23 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_100 GBV_ILN_170 GBV_ILN_185 GBV_ILN_2006 GBV_ILN_2016 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4046 GBV_ILN_4277 GBV_ILN_4313 GBV_ILN_4323 AR 34 2003 1 01 98-106 |
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10.1007/s00348-002-0538-0 doi (DE-627)OLC2074341849 (DE-He213)s00348-002-0538-0-p DE-627 ger DE-627 rakwb eng 620 530 VZ 530 VZ Ramaprabhu, P. verfasserin aut Simultaneous measurements of velocity and density in buoyancy-driven mixing 2003 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2003 Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing particle displacements from correlation peaks of intensity fields. Different concentrations of seed particles are used in the two streams of different temperature (density) fluids, and a local measure of the density is obtained by spatially averaging over an interrogation window. Good agreement is reported between the first- and second-order statistics for density obtained from this technique and from a thermocouple. Velocity–density correlations computed by cross-correlating individual time series are presented. The errors in the density measurements are quantified and analyzed, and the issue of spatial resolution is also discussed. Our purpose for this paper is to introduce the PIV-S method and validate its accuracy against corresponding thermocouple measurements. Time Series Velocity Field Particle Image Velocimetry Intensity Field Density Measurement Andrews, M. aut Enthalten in Experiments in fluids Springer-Verlag, 1983 34(2003), 1 vom: Jan., Seite 98-106 (DE-627)130443794 (DE-600)710083-8 (DE-576)015977404 0723-4864 nnns volume:34 year:2003 number:1 month:01 pages:98-106 https://doi.org/10.1007/s00348-002-0538-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_23 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_100 GBV_ILN_170 GBV_ILN_185 GBV_ILN_2006 GBV_ILN_2016 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4046 GBV_ILN_4277 GBV_ILN_4313 GBV_ILN_4323 AR 34 2003 1 01 98-106 |
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10.1007/s00348-002-0538-0 doi (DE-627)OLC2074341849 (DE-He213)s00348-002-0538-0-p DE-627 ger DE-627 rakwb eng 620 530 VZ 530 VZ Ramaprabhu, P. verfasserin aut Simultaneous measurements of velocity and density in buoyancy-driven mixing 2003 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2003 Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing particle displacements from correlation peaks of intensity fields. Different concentrations of seed particles are used in the two streams of different temperature (density) fluids, and a local measure of the density is obtained by spatially averaging over an interrogation window. Good agreement is reported between the first- and second-order statistics for density obtained from this technique and from a thermocouple. Velocity–density correlations computed by cross-correlating individual time series are presented. The errors in the density measurements are quantified and analyzed, and the issue of spatial resolution is also discussed. Our purpose for this paper is to introduce the PIV-S method and validate its accuracy against corresponding thermocouple measurements. Time Series Velocity Field Particle Image Velocimetry Intensity Field Density Measurement Andrews, M. aut Enthalten in Experiments in fluids Springer-Verlag, 1983 34(2003), 1 vom: Jan., Seite 98-106 (DE-627)130443794 (DE-600)710083-8 (DE-576)015977404 0723-4864 nnns volume:34 year:2003 number:1 month:01 pages:98-106 https://doi.org/10.1007/s00348-002-0538-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_23 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_100 GBV_ILN_170 GBV_ILN_185 GBV_ILN_2006 GBV_ILN_2016 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4046 GBV_ILN_4277 GBV_ILN_4313 GBV_ILN_4323 AR 34 2003 1 01 98-106 |
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10.1007/s00348-002-0538-0 doi (DE-627)OLC2074341849 (DE-He213)s00348-002-0538-0-p DE-627 ger DE-627 rakwb eng 620 530 VZ 530 VZ Ramaprabhu, P. verfasserin aut Simultaneous measurements of velocity and density in buoyancy-driven mixing 2003 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2003 Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing particle displacements from correlation peaks of intensity fields. Different concentrations of seed particles are used in the two streams of different temperature (density) fluids, and a local measure of the density is obtained by spatially averaging over an interrogation window. Good agreement is reported between the first- and second-order statistics for density obtained from this technique and from a thermocouple. Velocity–density correlations computed by cross-correlating individual time series are presented. The errors in the density measurements are quantified and analyzed, and the issue of spatial resolution is also discussed. Our purpose for this paper is to introduce the PIV-S method and validate its accuracy against corresponding thermocouple measurements. Time Series Velocity Field Particle Image Velocimetry Intensity Field Density Measurement Andrews, M. aut Enthalten in Experiments in fluids Springer-Verlag, 1983 34(2003), 1 vom: Jan., Seite 98-106 (DE-627)130443794 (DE-600)710083-8 (DE-576)015977404 0723-4864 nnns volume:34 year:2003 number:1 month:01 pages:98-106 https://doi.org/10.1007/s00348-002-0538-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_23 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_100 GBV_ILN_170 GBV_ILN_185 GBV_ILN_2006 GBV_ILN_2016 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4046 GBV_ILN_4277 GBV_ILN_4313 GBV_ILN_4323 AR 34 2003 1 01 98-106 |
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10.1007/s00348-002-0538-0 doi (DE-627)OLC2074341849 (DE-He213)s00348-002-0538-0-p DE-627 ger DE-627 rakwb eng 620 530 VZ 530 VZ Ramaprabhu, P. verfasserin aut Simultaneous measurements of velocity and density in buoyancy-driven mixing 2003 Text txt rdacontent ohne Hilfsmittel zu benutzen n rdamedia Band nc rdacarrier © Springer-Verlag 2003 Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing particle displacements from correlation peaks of intensity fields. Different concentrations of seed particles are used in the two streams of different temperature (density) fluids, and a local measure of the density is obtained by spatially averaging over an interrogation window. Good agreement is reported between the first- and second-order statistics for density obtained from this technique and from a thermocouple. Velocity–density correlations computed by cross-correlating individual time series are presented. The errors in the density measurements are quantified and analyzed, and the issue of spatial resolution is also discussed. Our purpose for this paper is to introduce the PIV-S method and validate its accuracy against corresponding thermocouple measurements. Time Series Velocity Field Particle Image Velocimetry Intensity Field Density Measurement Andrews, M. aut Enthalten in Experiments in fluids Springer-Verlag, 1983 34(2003), 1 vom: Jan., Seite 98-106 (DE-627)130443794 (DE-600)710083-8 (DE-576)015977404 0723-4864 nnns volume:34 year:2003 number:1 month:01 pages:98-106 https://doi.org/10.1007/s00348-002-0538-0 lizenzpflichtig Volltext GBV_USEFLAG_A SYSFLAG_A GBV_OLC SSG-OLC-TEC SSG-OLC-PHY GBV_ILN_21 GBV_ILN_23 GBV_ILN_40 GBV_ILN_62 GBV_ILN_65 GBV_ILN_70 GBV_ILN_100 GBV_ILN_170 GBV_ILN_185 GBV_ILN_2006 GBV_ILN_2016 GBV_ILN_2018 GBV_ILN_2020 GBV_ILN_4046 GBV_ILN_4277 GBV_ILN_4313 GBV_ILN_4323 AR 34 2003 1 01 98-106 |
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Simultaneous measurements of velocity and density in buoyancy-driven mixing |
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Ramaprabhu, P. |
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Experiments in fluids |
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Experiments in fluids |
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2003 |
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98 |
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Ramaprabhu, P. Andrews, M. |
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Ramaprabhu, P. |
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10.1007/s00348-002-0538-0 |
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620 530 |
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simultaneous measurements of velocity and density in buoyancy-driven mixing |
| title_auth |
Simultaneous measurements of velocity and density in buoyancy-driven mixing |
| abstract |
Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing particle displacements from correlation peaks of intensity fields. Different concentrations of seed particles are used in the two streams of different temperature (density) fluids, and a local measure of the density is obtained by spatially averaging over an interrogation window. Good agreement is reported between the first- and second-order statistics for density obtained from this technique and from a thermocouple. Velocity–density correlations computed by cross-correlating individual time series are presented. The errors in the density measurements are quantified and analyzed, and the issue of spatial resolution is also discussed. Our purpose for this paper is to introduce the PIV-S method and validate its accuracy against corresponding thermocouple measurements. © Springer-Verlag 2003 |
| abstractGer |
Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing particle displacements from correlation peaks of intensity fields. Different concentrations of seed particles are used in the two streams of different temperature (density) fluids, and a local measure of the density is obtained by spatially averaging over an interrogation window. Good agreement is reported between the first- and second-order statistics for density obtained from this technique and from a thermocouple. Velocity–density correlations computed by cross-correlating individual time series are presented. The errors in the density measurements are quantified and analyzed, and the issue of spatial resolution is also discussed. Our purpose for this paper is to introduce the PIV-S method and validate its accuracy against corresponding thermocouple measurements. © Springer-Verlag 2003 |
| abstract_unstemmed |
Abstract. A variant of the particle image velocimetry (PIV) technique is described for measuring velocity and density simultaneously in a turbulent Rayleigh–Taylor mixing layer. The velocity field is computed by the usual PIV technique of cross-correlating two consecutive images, and deducing particle displacements from correlation peaks of intensity fields. Different concentrations of seed particles are used in the two streams of different temperature (density) fluids, and a local measure of the density is obtained by spatially averaging over an interrogation window. Good agreement is reported between the first- and second-order statistics for density obtained from this technique and from a thermocouple. Velocity–density correlations computed by cross-correlating individual time series are presented. The errors in the density measurements are quantified and analyzed, and the issue of spatial resolution is also discussed. Our purpose for this paper is to introduce the PIV-S method and validate its accuracy against corresponding thermocouple measurements. © Springer-Verlag 2003 |
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Simultaneous measurements of velocity and density in buoyancy-driven mixing |
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