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- Title
方柱/板结合部马蹄涡流动结构的 动力学模态分解.
- Authors
王建明; 明晓杰; 王涵; 马阳; 王成军
- Abstract
The multi-frequency phenomenon exists with the horseshoe vortex flow structure in junction flow. In order to demonstrate the oscillatory characteristics and the basic dynamics, the periodical oscillatory horseshoe vortex system was simulated near the square prism-plate junction. The periodical oscillatory flow of the horseshoe vortex makes a multi-frequency phenomenon. Then the velocity field in the plane of symmetry was decomposed with the dynamic mode decomposition (DMD) method. The 1 st 3 modes were reconstructed and superposed on the mean flow mode respectively, and their progressive evolutions were analyzed. The results show that all the modes reveal the merging of horseshoe vortices in different sizes, and develop in different styles.
- Publication
Applied Mathematics & Mechanics (1000-0887), 2018, Vol 39, Issue 1, p64
- ISSN
1000-0887
- Publication type
Article
- DOI
10.21656/1000-0887.380125