On two asymmetry wake patterns behind two side-by-side square cylinders
Several asymmetric wake patterns are discovered for flow behind two side-by-side circle cylinders.The present work extends previous researches to study flow behind two side-by-side square cylinders with focus on two types of asymmetric wake flow, namely deflected oscillatory wake and flip-flop, which are believed to be of the same mechanism.The combination of the direct numerical simulation by lattice Boltzmann method (DNS-LBM) and the state-of-art dynamic mode decomposition (DMD) is used to explore the underlying physics of the flows.Both types of asymmetric wake patterns are presented in the wake like the wake of a pair of circle cylinders.It is confirmed that the deflection of the wake is not of Coanda effect.Furthermore, the dynamic modes of the flows are extracted from the numerical results.By comparing the corresponding modes, it is found here the two types of flow are of different mechanism.
Wake flow pattern Side-by-side cylinder DMD DNS-LBM
Wei Zhang Xiaodong Bai
Science and Technology on Water Jet Propulsion Laboratory, Marine design and research institute of C Ministry of Education Key laboratory of Structural Dynamic Behavior and Control, School of Civil Eng
国际会议
The Second Conference of Global Chinese Scholars on Hydrodynamics(第二届全球华人水动学学术会议)
江苏 无锡
英文
132-137
2016-11-11（万方平台首次上网日期，不代表论文的发表时间）