Numerical Investigation of Oscillations of Flexible Stabilizer Attached to Forced Vibrated Body via Fluid-Structure Interaction Simulation

In this paper, oscillations of a flexible stabilizer attached to three dimensional body in viscous subsonic flow are investigated. The purpose is firstly to analyze fluid structure interactions using a proper coupling algorithm that can couple the fluid and structure solvers and provide the data exchange between them and secondly to perform the stability analysis of body with its flexible stabilizer. For this purpose, iterative partitioned coupling algorithm is used for data exchange between structure and fluid. Then, the results of vibration characteristics including the amplitude and frequency and forces and moments variations are presented with respect to different bending stiffness and strip masses. Results show that the developed framework captures the physics of fluid-structure interaction with errors less than 10%. Finally, body stability analysis is performed with respect to the pitch damping coefficient using body forced vibrations and the obtained results showed the capability of strip stabilizer for providing the desired body stability.