Fluid–structure interactions of single and dual wall-mounted 2D flexible filaments in a laminar boundary layer. (January 2020)

• Record Type: Journal Article
• Authors: Zhang, Xiang; He, Guowei; Zhang, Xing
• Is Part Of: Journal of fluids and structures. Volume 92(2019)
• Publication Date: 2020-01
• Subjects: Fluid–structure interaction -- Flow-induced oscillation -- Frequency lock-in -- Vortex shedding -- Immersed boundary method; Fluid-structure interaction -- Periodicals; Fluid mechanics -- Periodicals; Structural dynamics -- Periodicals; Structural analysis (Engineering) -- Periodicals; 620.106
• DOI: 10.1016/j.jfluidstructs.2019.102787
• Languages: English
• ISSNs: 0889-9746

Abstract

Abstract: We numerically investigated the interactions of a laminar boundary layer flow with both single and dual wall-mounted 2D flexible filaments. The influences of various parameters, including bending rigidity, mass ratio, Reynolds number and interspace between two filaments, on the dynamics of the systems were explored systematically. Different modes of dynamic behavior in the single-filament and dual-filament systems were identified. The wake structures associated with different modes of dynamic behavior were compared. The physical mechanisms underlying the frequency lock-in phenomena observed in the flow-induced oscillations were also elucidated.