Rasmussen, KG
1993
The Effect of Monsized Hexane Droplets on the Thermal Structure of a Lifted Gaseous Flame
Rasmussen, K.G. and Queiroz, M.
Int. Journal of Exp. Heat Transfer, 6:80-89, 1993. (Previously presented at The III Encontro Nacional de Ciencias Termicas (ENCIT 90), Santa Caratina, Brazil, 1990). Funded by ACERC.
Gas temperature measurements have been completed in a lifted propane flame with and without droplets issuing from a contoured nozzle at several radial stations in the developing region of the jet. A general decrease in the average gas temperature was observed in the flame when the droplets were introduced, due to local evaporative cooling effects. Rms temperature profiles with two local extremes at either side of the average reaction zone were observed for 5 < x/D < 20 in the gaseous flame. Further downstream along the centerline, this region disappeared because the jet's fuel-rich, central core ceased to exist. The droplets prolonged the axial region where these double-maxima rms temperature profiles existed, due to an extension of the flame core. A comparison of power spectral densities measured with and without the droplets suggests that the droplets substantially changed to flow field in the core region, to the point of inhibiting a complex vortical structure existent in the gaseous flame.
1992
The Effect of Monosized Hexane Droplets on the Thermal Structure of a Lifted Gaseous Flame
Rasmussen, K.G. and Queiroz, M.
Int. Journal of Exp. Heat Transfer, 1992 (in press). [Previously presented at The III Encontro Nacional de Ciencias Termicas (ENCIT 90), Santa Caratina, Brazil, 1990.] Funded by ACERC.
Gas temperature measurements have been completed in a lifted propane flame with and without droplets issuing from a contoured nozzle at several radial stations in the developing region of the jet. A general decrease in the average gas temperature was observed in the flame when the droplets were introduced, due to local evaporative cooling effects. Rms temperature profiles with two local extremes at either side of the average reaction zone were observed for 5 < x/D < 20 in the gaseous flame. Further downstream along the centerline, this region disappeared because the jet's fuel-rich, central core ceased to exist. The droplets prolonged the axial region where these double-maxima rms temperature profiles existed, due to an extension of the flame core. A comparison of power spectral densities measured with and without the droplets suggests that the droplets substantially changed to flow field in the core region, to the point of inhibiting a complex vortical structure existent in the gaseous flame.
1990
The Effect of Monosized Hexane Droplets on the Thermal Structure of a Lifted Gaseous Flame
Rasmussen, K.G. and Queiroz, M.
The III Encontro Nacional de Ciencias Termicas (ENCIT 90), Santa Caratina, Brazil, 1990. Funded by ACERC.
Gas temperature measurements have been completed in a lifted propane flame with and without droplets issuing from a contoured nozzle at several radial stations in the developing region of the jet. A general decrease in the average gas temperature was observed in the flame when the droplets were introduced, due to local evaporative cooling effects. Rms temperature profiles with two local extremes at either side of the average reaction zone were observed for 5 < x/D < 20 in the gaseous flame. Further downstream along the centerline, this region disappeared because the jet's fuel-rich, central core ceased to exist. The droplets prolonged the axial region where these double-maxima rms temperature profiles existed, due to an extension of the flame core. A comparison of power spectral densities measured with and without the droplets suggests that the droplets substantially changed to flow field in the core region, to the point of inhibiting a complex vortical structure existent in the gaseous flame.
Rasmussen, KG
1993
The Effect of Monsized Hexane Droplets on the Thermal Structure of a Lifted Gaseous Flame
Rasmussen, K.G. and Queiroz, M.
Int. Journal of Exp. Heat Transfer, 6:80-89, 1993. (Previously presented at The III Encontro Nacional de Ciencias Termicas (ENCIT 90), Santa Caratina, Brazil, 1990). Funded by ACERC.
Gas temperature measurements have been completed in a lifted propane flame with and without droplets issuing from a contoured nozzle at several radial stations in the developing region of the jet. A general decrease in the average gas temperature was observed in the flame when the droplets were introduced, due to local evaporative cooling effects. Rms temperature profiles with two local extremes at either side of the average reaction zone were observed for 5 < x/D < 20 in the gaseous flame. Further downstream along the centerline, this region disappeared because the jet's fuel-rich, central core ceased to exist. The droplets prolonged the axial region where these double-maxima rms temperature profiles existed, due to an extension of the flame core. A comparison of power spectral densities measured with and without the droplets suggests that the droplets substantially changed to flow field in the core region, to the point of inhibiting a complex vortical structure existent in the gaseous flame.
1992
The Effect of Monosized Hexane Droplets on the Thermal Structure of a Lifted Gaseous Flame
Rasmussen, K.G. and Queiroz, M.
Int. Journal of Exp. Heat Transfer, 1992 (in press). [Previously presented at The III Encontro Nacional de Ciencias Termicas (ENCIT 90), Santa Caratina, Brazil, 1990.] Funded by ACERC.
Gas temperature measurements have been completed in a lifted propane flame with and without droplets issuing from a contoured nozzle at several radial stations in the developing region of the jet. A general decrease in the average gas temperature was observed in the flame when the droplets were introduced, due to local evaporative cooling effects. Rms temperature profiles with two local extremes at either side of the average reaction zone were observed for 5 < x/D < 20 in the gaseous flame. Further downstream along the centerline, this region disappeared because the jet's fuel-rich, central core ceased to exist. The droplets prolonged the axial region where these double-maxima rms temperature profiles existed, due to an extension of the flame core. A comparison of power spectral densities measured with and without the droplets suggests that the droplets substantially changed to flow field in the core region, to the point of inhibiting a complex vortical structure existent in the gaseous flame.
1990
The Effect of Monosized Hexane Droplets on the Thermal Structure of a Lifted Gaseous Flame
Rasmussen, K.G. and Queiroz, M.
The III Encontro Nacional de Ciencias Termicas (ENCIT 90), Santa Caratina, Brazil, 1990. Funded by ACERC.
Gas temperature measurements have been completed in a lifted propane flame with and without droplets issuing from a contoured nozzle at several radial stations in the developing region of the jet. A general decrease in the average gas temperature was observed in the flame when the droplets were introduced, due to local evaporative cooling effects. Rms temperature profiles with two local extremes at either side of the average reaction zone were observed for 5 < x/D < 20 in the gaseous flame. Further downstream along the centerline, this region disappeared because the jet's fuel-rich, central core ceased to exist. The droplets prolonged the axial region where these double-maxima rms temperature profiles existed, due to an extension of the flame core. A comparison of power spectral densities measured with and without the droplets suggests that the droplets substantially changed to flow field in the core region, to the point of inhibiting a complex vortical structure existent in the gaseous flame.