Vortex-induced three-degree-of-freedom vibration of a piggyback circular cylinder system

A stabilized finite element method is adopted to solve the Navier–Stokes equations written in arbitrary Lagrangian–Eulerian from. Extensive simulations are undertaken investigate vortex induced vibration characteristics of a piggyback circular cylinder system, or smaller rigidly connected main one. In particular, system three-degree-freedom motion, its rotation motion taken into account, while previous work very much focuses on translational motions. This achieved though using remeshing during system. Various case studies have been at Reynolds number Re=100, as prime purpose not about turbulence itself but effect interaction with flow. results provided show behaviours different orientation relative incoming The rotational extensively investigated. Key physical features highlighted and conclusions then drawn.