Numerical Simulation of Three-Dimensional Bidirectional Fluid-Structure Interaction for High-Rise Buildings with Square Cross-Sections

XU Jialu; SHEN Lian; HAN Yan; PAN Xiaowang; ZHOU Pinhan; WEN Tianzhen

doi:10.3724/j.gyjzG24102106

Volume 56 Issue 6

Jun. 2026

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XU Jialu, SHEN Lian, HAN Yan, PAN Xiaowang, ZHOU Pinhan, WEN Tianzhen. Numerical Simulation of Three-Dimensional Bidirectional Fluid-Structure Interaction for High-Rise Buildings with Square Cross-Sections[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 133-141. doi: 10.3724/j.gyjzG24102106

Citation:

XU Jialu, SHEN Lian, HAN Yan, PAN Xiaowang, ZHOU Pinhan, WEN Tianzhen. Numerical Simulation of Three-Dimensional Bidirectional Fluid-Structure Interaction for High-Rise Buildings with Square Cross-Sections[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 133-141. doi: 10.3724/j.gyjzG24102106

Citation:

XU Jialu, SHEN Lian, HAN Yan, PAN Xiaowang, ZHOU Pinhan, WEN Tianzhen. Numerical Simulation of Three-Dimensional Bidirectional Fluid-Structure Interaction for High-Rise Buildings with Square Cross-Sections[J]. INDUSTRIAL CONSTRUCTION, 2026, 56(6): 133-141. doi: 10.3724/j.gyjzG24102106

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Numerical Simulation of Three-Dimensional Bidirectional Fluid-Structure Interaction for High-Rise Buildings with Square Cross-Sections

doi: 10.3724/j.gyjzG24102106

1. School of Civil Engineering, Changsha University of Science & Technology, Changsha 410114, China;
2. School of Civil Engineering, Changsha University, Changsha 410022, China

Received Date: 2024-10-21
Available Online: 2026-07-06

Abstract

Abstract

To investigate the wind-induced vibrations of high-rise buildings under bidirectional fluid-structure interaction （FSI）， a Computational Fluid Dynamics （CFD） numerical simulation was conducted on a high-rise building characterized by an aspect ratio （width-to-height） of 1∶10. A three-dimensional finite element model of the building was established for modal analysis. By fitting the modal coordinates， modal shape functions were obtained. Subsequently， these modal shape functions were incorporated into a User-Defined Function （UDF） that combines the fourth-order Runge-Kutta method with the mode superposition technique. This UDF was utilized to derive the time-history data of the crosswind vibration displacement at the top of the building. The computational results were then compared with those from wind tunnel experiments， which demonstrated the validity of the computational approach employed. On this basis， a comparative analysis was conducted to examine the flow field distribution surrounding the building， the crosswind displacement response at the top of the building， and the energy interaction between the building and the flow field under both bidirectional and unidirectional FSI conditions. The results indicate that when the bidirectional FSI effect is accounted for， the vortex shedding at the building rear intensifies， accompanied by an increase in vortex size. Under bidirectional FSI， the crosswind displacement at the top decreases by approximately 15% compared to the rigid model and aligns more closely with wind tunnel data. During vortex-induced resonance， a notable phase difference discrepancy arises between the crosswind vibration response and the lift coefficient time-histories for bidirectional versus unidirectional FSI. The underlying mechanisms of unidirectional and bidirectional FSI differ substantially. Unidirectional FSI results exhibit significantly stronger regularity than their bidirectional counterparts. Owing to the mutual structure-fluid interaction， bidirectional FSI outcomes display a higher degree of randomness.
- high-rise buildings,
- fluid-structure interaction,
- wind-induced vibration,
- energy transfer

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References(25)

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