The initial flow characteristics of supersonic jets with different geometries

被引：10
作者：
Zhang, Huanhao [1 ]
Chen, Zhihua [1 ]
Jiang, Xiaohai [1 ]
Guo, Zeqing [1 ]
机构：
[1] Nanjing Univ Sci & Technol, Key Lab Transient Phys, Nanjing 210094, Jiangsu, Peoples R China
来源：
PHYSICS LETTERS A | 2015年 / 379卷 / 18-19期
基金：
中国国家自然科学基金;
关键词：
Supersonic jet; Non-circular jet; Compressible vortex loop; Axis switching; Large eddy simulation; ASYMMETRIC JET; FIELD; VISUALIZATION; DYNAMICS;
D O I：
10.1016/j.physleta.2015.02.027
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Based on large eddy simulation (LES) combined with the high-order hybrid schemes, the flow characteristics of both supersonic circular and square jets were investigated numerically for Ma = 1.4. Our results illustrate the three-dimensional (3D) structures and their evolutions of both circular and square jets, as well as the shock structures of both jets. Moreover, the phenomena of 45 axis switching and stream-wise vortices enhancing the entrainment and mixing process of the square jet were also identified and discussed in detail. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：1256 / 1262
页数：7
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