Author(s): Kwanho Ree; Jin Hwan Hwang
Linked Author(s): Jin Hwan Hwang
Keywords: Cylinder wake; Triple decomposition; Coherent motion; Kinetic energy budgets; POD
Abstract: Wake dynamics behind bluff bodies, such as cylinders, have been a topic of extensive research due to their implications in engineering fields. These wakes produce alternating vortices and unsteady coherent motions, which significantly impact structural stability, flow-induced vibrations, and acoustic noise (Williamson, 1996). Despite their significance, the energy interactions among mean flow, coherent wave motion, and turbulence within cylinder wakes are not yet fully understood. Utilizing a triple decomposition framework, this study aims to analyze the transfer mechanisms of kinetic energy among these components, focusing on the behavior of unsteady coherent structures and their distinction from turbulent fluctuations.
Year: 2025