Numerical simulations of buoyant reactive jets with sidewall effects

被引：2
|
作者：
Zhang, HP [1 ]
Jiang, X
Wang, W
Yang, Y
Xu, L
Fan, WC
机构：
[1] Univ Sci & Technol China, State Key Lab Fire Sci, Hefei 230027, Peoples R China
[2] Brunel Univ, Dept Mech Engn, Uxbridge UB8 3PH, Middx, England
来源：
CHINESE SCIENCE BULLETIN | 2004年 / 49卷 / 19期
基金：
中国国家自然科学基金;
关键词：
buoyancy; entrainment; reactive jet; numerical simulation;
D O I：
10.1360/04we0008
中图分类号：
O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];
学科分类号：
07 ; 0710 ; 09 ;
摘要：
The near field dynamics of buoyant reactive jets with adjacent sidewalls is investigated by time-dependent three-dimensional direct simulations. The physical problem is a fuel jet issuing vertically into an oxidant ambient environment in a corner configuration with sidewall boundaries. Simulation results are presented for two cases with different jet nozzle geometries: a corner-round reactive jet and a corner-square reactive jet with the same cross-sectional area on the nozzle plane. Buoyancy-induced large vortical structures evolve spatially in the flow field and transition to turbulence occurs downstream. Calculation of the mean flow properties shows that entrainment of the corner-round jet is stronger than that of the corner-square jet due to the stronger vortex deformation in the corner-round case.
引用
收藏
页码：2105 / 2109
页数：5
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