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Erschienen in: Experiments in Fluids 6/2011

01.06.2011 | Research Article

Near-field development of gas-phase horizontal laminar jets with positive and negative buoyancy measured with filtered Rayleigh scattering

verfasst von: Mark F. Reeder, Richard E. Huffman, Richard D. Branam, Kenneth D. Lebay, Steven M. Meents

Erschienen in: Experiments in Fluids | Ausgabe 6/2011

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Abstract

Near-field mixing characteristics of horizontally issuing jets, alternatively positively and negatively buoyant, are explored. The cross-sectional mass fraction of a buoyant horizontal jet consisting of helium flowing into ambient air is measured using a non-intrusive technique, filtered Rayleigh scattering, for Reynolds numbers ranging from 50 to 1,200, Froude numbers ranging as low as 0.71, and Schmidt numbers on the order of unity for all tests. Several corresponding experiments were carried out using carbon dioxide in place of helium in order to determine whether the direction of the buoyancy changes the characteristic shape of the jet cross-section. Consistent with the literature, mixing rates were consistently higher on the side of the jet where instability, due to density stratification, was present. At jet Froude numbers ranging between 1.5 and approximately 3, the jet cross-section takes a shape consistent with a single plume of fluid being ejected from the core in a vertical direction—upward for a jet with positive buoyancy and downward for a jet with negative buoyancy. Remarkably, for Froude numbers less than unity, the distortion of the jet is quite different in that two separate plumes emanate from each side of the jet while ejection from the center is suppressed. Both the positively and negatively buoyant jet cross-sections exhibited this trait, suggesting that the mechanism that determines the cross-sectional shape of the jet core is only mildly influenced by centripetal effects brought about by streamline curvature. The location of the jet centroid at varied streamwise locations was computed from the mass fraction data, yielding jet trajectory.

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Literatur
Zurück zum Zitat Arakeri JH, Das D, Srinivasan J (2000) Bifurcation in a buoyant horizontal laminar jet. J Fluid Mech 412:61–73MATHCrossRef Arakeri JH, Das D, Srinivasan J (2000) Bifurcation in a buoyant horizontal laminar jet. J Fluid Mech 412:61–73MATHCrossRef
Zurück zum Zitat Batchelor GK, Canuto VM, Chasnov JR (1992) Homogeneous buoyancy-generated turbulence. J Fluid Mech 225:349–378MathSciNetCrossRef Batchelor GK, Canuto VM, Chasnov JR (1992) Homogeneous buoyancy-generated turbulence. J Fluid Mech 225:349–378MathSciNetCrossRef
Zurück zum Zitat Beck WH, Stockman E, Zaidi SH, Miles RB (2006) Rayleigh scattering measurements for obtaining spatially resolved absolute gas densities in large scale facilities. AIAA Paper 2006-0835 Beck WH, Stockman E, Zaidi SH, Miles RB (2006) Rayleigh scattering measurements for obtaining spatially resolved absolute gas densities in large scale facilities. AIAA Paper 2006-0835
Zurück zum Zitat Boguszko M, Elliott GS (2005) Property measurement utilizing atomic/molecular filter-based diagnostics. Prog Aerosp Sci 41:93–142CrossRef Boguszko M, Elliott GS (2005) Property measurement utilizing atomic/molecular filter-based diagnostics. Prog Aerosp Sci 41:93–142CrossRef
Zurück zum Zitat Crafton JW, Carter CD, Elliott GS (2001) Three-component phase-averaged velocity measurements of an optically perturbed supersonic jet using multi-component planar Doppler velocimetry. Meas Sci Technol 12:409–419CrossRef Crafton JW, Carter CD, Elliott GS (2001) Three-component phase-averaged velocity measurements of an optically perturbed supersonic jet using multi-component planar Doppler velocimetry. Meas Sci Technol 12:409–419CrossRef
Zurück zum Zitat Hasselbrink EF, Mungal MG (2001) Transverse jets and flames. Part 2. Velocity and OH field imaging. J Fluid Mech 443:27–68 Hasselbrink EF, Mungal MG (2001) Transverse jets and flames. Part 2. Velocity and OH field imaging. J Fluid Mech 443:27–68
Zurück zum Zitat Jirka G (2004) Integral model for turbulent buoyant jets in unbounded stratified flows. Part I: single round jet. Environ Fluid Mech 4:1–56CrossRef Jirka G (2004) Integral model for turbulent buoyant jets in unbounded stratified flows. Part I: single round jet. Environ Fluid Mech 4:1–56CrossRef
Zurück zum Zitat Kikkert GA, Davidson MJ, Nokes RI (2007) Inclined negatively buoyant discharges. J Hydr Eng 133:545–554CrossRef Kikkert GA, Davidson MJ, Nokes RI (2007) Inclined negatively buoyant discharges. J Hydr Eng 133:545–554CrossRef
Zurück zum Zitat List EJ (1982) Turbulent jets and plumes. Annu Rev Fluid Mech 14:189–212CrossRef List EJ (1982) Turbulent jets and plumes. Annu Rev Fluid Mech 14:189–212CrossRef
Zurück zum Zitat Miles RB, Lempert WR, Forkey JN (2001) Laser Rayleigh scattering. Meas Sci Technol 12:33–51CrossRef Miles RB, Lempert WR, Forkey JN (2001) Laser Rayleigh scattering. Meas Sci Technol 12:33–51CrossRef
Zurück zum Zitat Monkewitz PA, Pfizenmaier E (1991) Mixing by side jets in strongly forced and self-excited round jets. Phys Fluids A 3:1356–1361CrossRef Monkewitz PA, Pfizenmaier E (1991) Mixing by side jets in strongly forced and self-excited round jets. Phys Fluids A 3:1356–1361CrossRef
Zurück zum Zitat Pan X, Schneider MN, Miles RB (2005) Power spectrum of coherent Rayleigh-Brillouin scattering in carbon dioxide. Physical Rev A 71:045801CrossRef Pan X, Schneider MN, Miles RB (2005) Power spectrum of coherent Rayleigh-Brillouin scattering in carbon dioxide. Physical Rev A 71:045801CrossRef
Zurück zum Zitat Papantoniou D, List EJ (1989) Large-scale structure in the far-field of buoyant jets. J Fluid Mech 209:151–190CrossRef Papantoniou D, List EJ (1989) Large-scale structure in the far-field of buoyant jets. J Fluid Mech 209:151–190CrossRef
Zurück zum Zitat Querzoli G, Cenedese A (2005) On the structure of a laminar buoyant jet released horizontally. J Hydraul Res 43:71–85CrossRef Querzoli G, Cenedese A (2005) On the structure of a laminar buoyant jet released horizontally. J Hydraul Res 43:71–85CrossRef
Zurück zum Zitat Richards CD, Pitts WM (1993) Global density effects on the self-preservation behaviour of turbulent free jets. J Fluid Mech 254:417–435CrossRef Richards CD, Pitts WM (1993) Global density effects on the self-preservation behaviour of turbulent free jets. J Fluid Mech 254:417–435CrossRef
Zurück zum Zitat Satyanarayana S, Jaluria A (1982) A study of laminar buoyant jets discharged at an inclination to the vertical buoyancy force. Int J Heat Mass Transf 25:1569–1576CrossRef Satyanarayana S, Jaluria A (1982) A study of laminar buoyant jets discharged at an inclination to the vertical buoyancy force. Int J Heat Mass Transf 25:1569–1576CrossRef
Zurück zum Zitat Sneep M, Ubacks W (2005) Direct measurement of the Rayleigh scattering cross section in various gases. J Quant Spectrosc Radiat Transf 92:293–310CrossRef Sneep M, Ubacks W (2005) Direct measurement of the Rayleigh scattering cross section in various gases. J Quant Spectrosc Radiat Transf 92:293–310CrossRef
Zurück zum Zitat Su LK, Helmer DB, Brownell CJ (2010) Quantitative planar imaging of turbulent buoyant jet mixing. J Fluid Mech 643:59–95MATHCrossRef Su LK, Helmer DB, Brownell CJ (2010) Quantitative planar imaging of turbulent buoyant jet mixing. J Fluid Mech 643:59–95MATHCrossRef
Zurück zum Zitat Subbarao ER, Cantwell BJ (1992) Investigation of a co-flowing buoyant jet: experiments on the effect of Reynolds number and Richardson number. J Fluid Mech 245:69–90CrossRef Subbarao ER, Cantwell BJ (1992) Investigation of a co-flowing buoyant jet: experiments on the effect of Reynolds number and Richardson number. J Fluid Mech 245:69–90CrossRef
Zurück zum Zitat Xiao J, Travis JR, Breitung W (2009) Non-Boussinesq integral model for horizontal turbulent buoyant round jets. Science and Technology of Nuclear Installations, vol 2009, Article ID 862934,7 p Xiao J, Travis JR, Breitung W (2009) Non-Boussinesq integral model for horizontal turbulent buoyant round jets. Science and Technology of Nuclear Installations, vol 2009, Article ID 862934,7 p
Metadaten
Titel
Near-field development of gas-phase horizontal laminar jets with positive and negative buoyancy measured with filtered Rayleigh scattering
verfasst von
Mark F. Reeder
Richard E. Huffman
Richard D. Branam
Kenneth D. Lebay
Steven M. Meents
Publikationsdatum
01.06.2011
Verlag
Springer-Verlag
Erschienen in
Experiments in Fluids / Ausgabe 6/2011
Print ISSN: 0723-4864
Elektronische ISSN: 1432-1114
DOI
https://doi.org/10.1007/s00348-010-0999-5

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