TY - GEN
T1 - Theoretical analysis of surface waves on liquid jets in crossflows with deformation
AU - Wang, Shaolin
AU - Huang, Yong
AU - Wang, Fang
AU - Liu, Zhilin
PY - 2013
Y1 - 2013
N2 - Liquid jets in cross air flows are widely used and play an important role in propulsion systems, such as ramjet combustors. Surface waves on the liquid jets in gaseous crossflows have been bserved in numerous experiments. Especially for lower gas Webber number, liquid jets breaks up due to the surface waves. However compared with injecting into gas coaxial flow, liquid jet will be deformed in crossflow due to the transverse aerodynamic force. Deformation of jet is investigated by analyzing stress force equilibrium of the cross-section. Though linear instability analysis, dispersion relation and growth rate of surface waves of liquid jet with deformation were derived. According to the present theoretical analysis, the cross-section shape can be deformed to stable ellipse only if the gas velocity was lower than 9m/s for 1mm diameter jet. The maximum growth rate of disturbances takes place at wave number 0.7 approximately, and it will decrease with increasing the jet diameter. The range of instable wave number will expand and the most instable wave number will grow for the deformed jets.
AB - Liquid jets in cross air flows are widely used and play an important role in propulsion systems, such as ramjet combustors. Surface waves on the liquid jets in gaseous crossflows have been bserved in numerous experiments. Especially for lower gas Webber number, liquid jets breaks up due to the surface waves. However compared with injecting into gas coaxial flow, liquid jet will be deformed in crossflow due to the transverse aerodynamic force. Deformation of jet is investigated by analyzing stress force equilibrium of the cross-section. Though linear instability analysis, dispersion relation and growth rate of surface waves of liquid jet with deformation were derived. According to the present theoretical analysis, the cross-section shape can be deformed to stable ellipse only if the gas velocity was lower than 9m/s for 1mm diameter jet. The maximum growth rate of disturbances takes place at wave number 0.7 approximately, and it will decrease with increasing the jet diameter. The range of instable wave number will expand and the most instable wave number will grow for the deformed jets.
KW - Deformation
KW - Linear instability analysis
KW - Liquid jets in gaseous crossflows
KW - Surface wave
UR - https://www.scopus.com/pages/publications/84876587700
U2 - 10.4028/www.scientific.net/AMR.681.152
DO - 10.4028/www.scientific.net/AMR.681.152
M3 - 会议稿件
AN - SCOPUS:84876587700
SN - 9783037856642
T3 - Advanced Materials Research
SP - 152
EP - 157
BT - Research Efforts in Material Science and Mechanics Engineering
PB - Trans Tech Publications Ltd
T2 - International Conference on Engineering Materials for Electronics, Communication and Construction, EMECC 2012
Y2 - 25 August 2012 through 26 August 2012
ER -