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Inclined negatively buoyant jets 1 / Ilias G. Papakonstantis in Journal of hydraulic research, Vol. 49 N° 1 (Janvier/Fevrier 2011) 

Public ISBD [article]  in Journal of hydraulic research > Vol. 49 N° 1 (Janvier/Fevrier 2011) . - pp. 3-12 Titre : Inclined negatively buoyant jets 1 : geometrical characteristics Type de document : texte imprimé Auteurs : Ilias G. Papakonstantis, Auteur ; George C. Christodoulou, Auteur ; Panos N. Papanicolaou, Auteur Année de publication : 2011 Article en page(s) : pp. 3-12 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Buoyant  jet  Desalination  brine  Discharge  angle  Jet  trajectory  Negative  buoyancy  Turbulent  jet Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : Experimental results on inclined turbulent round jets with negative buoyancy discharging in a calm homogeneous fluid are presented. Six different discharge angles from 45° to 90° to the horizontal are studied, and the jet evolution is recorded by means of a video camera. Results concern the main geometrical characteristics of the jet trajectory, i.e. the initial terminal height of rise reached by the jet at flow initiation, the final terminal height of rise observed at steady state, the horizontal distance from the source at which the terminal height is observed and the horizontal distance to the point where the jet returns at the source elevation. The densimetric Froude number at the source ranges between 7 and 60, whereas the Reynolds number is generally higher than 6000. Results are given in dimensionless form and confirm theoretical considerations obtained by dimensional analysis. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.informaworld.com/smpp/content~db=all~content=a933308831~frm=titlelink [article] Inclined negatively buoyant jets 1 : geometrical characteristics [texte imprimé] / Ilias G. Papakonstantis, Auteur ; George C. Christodoulou, Auteur ; Panos N. Papanicolaou, Auteur . - 2011 . - pp. 3-12. Hydraulique Langues : Anglais (eng) in Journal of hydraulic research > Vol. 49 N° 1 (Janvier/Fevrier 2011) . - pp. 3-12 Mots-clés : Buoyant  jet  Desalination  brine  Discharge  angle  Jet  trajectory  Negative  buoyancy  Turbulent  jet Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : Experimental results on inclined turbulent round jets with negative buoyancy discharging in a calm homogeneous fluid are presented. Six different discharge angles from 45° to 90° to the horizontal are studied, and the jet evolution is recorded by means of a video camera. Results concern the main geometrical characteristics of the jet trajectory, i.e. the initial terminal height of rise reached by the jet at flow initiation, the final terminal height of rise observed at steady state, the horizontal distance from the source at which the terminal height is observed and the horizontal distance to the point where the jet returns at the source elevation. The densimetric Froude number at the source ranges between 7 and 60, whereas the Reynolds number is generally higher than 6000. Results are given in dimensionless form and confirm theoretical considerations obtained by dimensional analysis. DEWEY : 627 ISSN : 0022-1686 En ligne : http://www.informaworld.com/smpp/content~db=all~content=a933308831~frm=titlelink

Inclined negatively buoyant jets 2 / Ilias G. Papakonstantis in Journal of hydraulic research, Vol. 49 N° 1 (Janvier/Fevrier 2011) 

Public ISBD [article]  in Journal of hydraulic research > Vol. 49 N° 1 (Janvier/Fevrier 2011) . - pp. 13-22 Titre : Inclined negatively buoyant jets 2 : concentration measurements Type de document : texte imprimé Auteurs : Ilias G. Papakonstantis, Auteur ; George C. Christodoulou, Auteur ; Panos N. Papanicolaou, Auteur Année de publication : 2011 Article en page(s) : pp. 13-22 Note générale : Hydraulique Langues : Anglais (eng) Mots-clés : Concentration  Desalination  brine  Dilution  Inclined  turbulent  jet  Negative  buoyancy  Turbulent  intensity Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : Experiments on concentration measurements in round turbulent negatively buoyant jets discharging into a calm homogeneous fluid at three different angles are presented. Detailed measurements using a micro-scale conductivity probe were carried out at the horizontal location of the terminal rise height, mostly along the vertical of the axial jet plane and in the transverse direction. The dimensionless vertical distribution of the mean concentration is found to be asymmetric, whereas the transverse distribution is approximately Gaussian. At the same horizontal location, the vertical distribution of the concentration turbulent intensity has a maximum at a point systematically higher than the jet axis. The width of the mean concentration distribution, the heights to the location of the maximum mean concentration and to the maximum turbulent intensity as well as the minimum dilution are determined. From measurements in the region where the jet returns to the source elevation, the minimum dilution and the horizontal distance to the return point are estimated. DEWEY : 627 ISSN : 0022.1686 En ligne : http://www.informaworld.com/smpp/content~db=all~content=a933312970~frm=titlelink [article] Inclined negatively buoyant jets 2 : concentration measurements [texte imprimé] / Ilias G. Papakonstantis, Auteur ; George C. Christodoulou, Auteur ; Panos N. Papanicolaou, Auteur . - 2011 . - pp. 13-22. Hydraulique Langues : Anglais (eng) in Journal of hydraulic research > Vol. 49 N° 1 (Janvier/Fevrier 2011) . - pp. 13-22 Mots-clés : Concentration  Desalination  brine  Dilution  Inclined  turbulent  jet  Negative  buoyancy  Turbulent  intensity Index. décimale : 627 Ingénierie des cours d'eau naturels, des ports, des rades et des cotes. Installations de navigation, de dragage, de récupération et de sauvetage. Barrages et centrales électriques hydrauliques Résumé : Experiments on concentration measurements in round turbulent negatively buoyant jets discharging into a calm homogeneous fluid at three different angles are presented. Detailed measurements using a micro-scale conductivity probe were carried out at the horizontal location of the terminal rise height, mostly along the vertical of the axial jet plane and in the transverse direction. The dimensionless vertical distribution of the mean concentration is found to be asymmetric, whereas the transverse distribution is approximately Gaussian. At the same horizontal location, the vertical distribution of the concentration turbulent intensity has a maximum at a point systematically higher than the jet axis. The width of the mean concentration distribution, the heights to the location of the maximum mean concentration and to the maximum turbulent intensity as well as the minimum dilution are determined. From measurements in the region where the jet returns to the source elevation, the minimum dilution and the horizontal distance to the return point are estimated. DEWEY : 627 ISSN : 0022.1686 En ligne : http://www.informaworld.com/smpp/content~db=all~content=a933312970~frm=titlelink