AN EXPERIMENTAL STUDY OF THE LARGE SCALE COHERENT STRUCTURES IN A FORCED FREE SHEAR LAYER

作     者：Zhang Hongquan Shu Wei, Department of Mechanics, Tianfin University, Tianjin, China 

作者机构：Department of Mechanics Tianjin University Tianjin China 

出 版 物：《Acta Mechanica Sinica》 (力学学报（英文版）)

年 卷 期：1990年第6卷第1期

页      面：9-14页

核心收录：

学科分类：08[工学] 0802[工学-机械工程] 0701[理学-数学] 0801[工学-力学（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：large scale coherent structure vortex merging vortex splitting 

摘      要：The dynamic characteristics of the large scale coherent structures in a forced free shear layer are experi- mentally studied by means of flow visualization. The quantitative measurements are acquired by the use of a LDV. It is shown that the development of the coherent structures can be greatly influenced by upstream artificial perturbations and as a result the mixing in the layer can be controlled. Like vortex merging, vortex splitting is also a common evolu- tion pattern in the development of the coherent structures.