TY - JOUR
T1 - Numerical simulation of jet mixing enhancement using rectangular control jets
AU - Eri, Qitai
AU - Zhang, Zhen
AU - Zhang, Rubing
AU - Li, Ting
N1 - Publisher Copyright:
© IMechE 2017.
PY - 2019/1/1
Y1 - 2019/1/1
N2 - The effect of rectangular control jet on the mixing of round jet with ambient air was studied numerically, in the present work. The effect on the length of main jet potential core and the penetration depth of the control jet, due to variations in velocity and width of the control jet, was studied. The mechanism of jet mixing enhancement was also studied. The results indicated that due to the rectangle jets, the main core region was bifurcated. Thus, there were two definitions for the length of main jet core: the length of centerline potential core and the length of actual potential core. Both lengths decreased with increase in control jet velocity. Besides, the length of the actual potential core decreased with increase in control jet width. However, for the length of centerline potential core, there was a specific width, at which the length of centerline potential core reached a minimum value. Finally, the deformation of the main jet was a factor, more critical compared to the streamwise vortices, which had an effect on the control jet.
AB - The effect of rectangular control jet on the mixing of round jet with ambient air was studied numerically, in the present work. The effect on the length of main jet potential core and the penetration depth of the control jet, due to variations in velocity and width of the control jet, was studied. The mechanism of jet mixing enhancement was also studied. The results indicated that due to the rectangle jets, the main core region was bifurcated. Thus, there were two definitions for the length of main jet core: the length of centerline potential core and the length of actual potential core. Both lengths decreased with increase in control jet velocity. Besides, the length of the actual potential core decreased with increase in control jet width. However, for the length of centerline potential core, there was a specific width, at which the length of centerline potential core reached a minimum value. Finally, the deformation of the main jet was a factor, more critical compared to the streamwise vortices, which had an effect on the control jet.
KW - Mixing enhancement
KW - control jet-penetration
KW - control jet-velocity
KW - control jet-width
KW - potential core length
UR - https://www.scopus.com/pages/publications/85045262433
U2 - 10.1177/0954410017727029
DO - 10.1177/0954410017727029
M3 - 文章
AN - SCOPUS:85045262433
SN - 0954-4100
VL - 233
SP - 111
EP - 124
JO - Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
JF - Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering
IS - 1
ER -