Numerical Simulation for Vortex-Induced Vibration (VIV) of a High-Rise Building Based on Two-Way Coupled Fluid-Structure Interaction Method

Abstract

The vortex shedding phenomenon caused by flow separation at windward corners of a high-rise building would lead to significant vortex-induced vibrations (VIVs). This paper proposes a novel and efficient two-way coupled fluid-structure interaction (FSI) method named as equivalent lumped mass system (ELMS) method to study the wind-induced responses of the Common Advisory Aeronautical Council (CAARC) building. The numerical results of ELMS are validated based on available data of aeroelastic tests. To verify the computational efficiency of ELMS method, this study also employs the other two two-way coupled FSI methods (free-form deformation (FFD) method and mapping interpolation algorithms in system coupling (MIASC) method) to simulate the response of the same high-rise building. Furthermore, the VIV mechanisms of the high-rise building are explicitly discussed based on the numerical results of the ELMS method combined with large eddy simulation (LES). The outcomes show that the ELMS method could well capture the significant amplification of cross-wind response and “lock-in” phenomenon at the range of the critical wind speed. Moreover, the computational efficiency of the ELMS method is much improved compared with the other two FSI methods. The spatial correlation and spectral coherence of the local loads at different heights of the building are increased significantly at the “lock-in” stage. The findings in this study would facility the comprehensive understanding of the VIV phenomena of the high-rise building and provide an efficient two-way coupled FSI method for engineers and researchers involved in the wind-resistant design of slender tall buildings.

Wind-Induced Response Assessment of CAARC Building Based on LBM and FSI Simulation

“…Péntek [13] considered the additional mass damper's influence on structural wind-induced displacement using an FSI method. Yan [14] proposed an efficient two-way FSI technique based on an equivalent concentrated mass system. By comparing with other FSI equivalent methods and aerodynamic elasticity test data, it was found that this method, combined with LES, can efficiently capture and simulate the vortex-induced resonance phenomenon of CAARC high-rise buildings.…”

Investigation of Effect of Wind-Induced Vibration on Typical Frame Structures on the Open Decks of Large Cruise Ships Based on the Subdomain Method

“…With the development of computing technology, many scholars have investigated wind-induced vibration by using fluid-structure interaction simulations [3,25,26]. Fluid-structure interaction wind vibration simulations typically encompass one-way fluid-structure interaction [27][28][29] and two-way fluid-structure interaction [30][31][32]. In one-way FSI studies on wind-induced vibration in high-rise buildings, wind load data are typically acquired through numerical calculations or experiments, and subsequently applied to the structural finite element model [29].…”