Guest Editors
Dr. Jiujiang Wu
Email: wujiujiang1988@swust.edu.cn
Affiliation: Department of Civil Engineering and Achitecture, Southwest University of Science and Technology, Mianyang, 621000, China
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Research Interests: computational fluid dynamics (CFD), bridge scour, fluid–structure interaction, sediment transport, offshore and coastal geotechnical engineering

Dr. Qingsong Duan
Email: swjtu_dqs@163.com
Affiliation: Department of Civil Engineering and Achitecture, Southwest University of Science and Technology, Mianyang, 621000, China
Homepage:
Research Interests: computational fluid dynamics (CFD), wind engineering

Summary
Fluid dynamic effects play a critical role in the performance, safety, and durability of bridge structures exposed to complex environmental loading conditions, including wind, river flow, waves, and turbulent hydraulic actions. The interaction between fluid flow and bridge components governs a wide range of engineering phenomena, such as aerodynamic response, flow-induced vibration, hydrodynamic loading, and erosion and scour around foundations. Understanding and modeling these processes remain essential challenges in modern bridge engineering.
Recent advances in numerical modeling, experimental techniques, and computational fluid dynamics (CFD) have significantly enhanced the ability to investigate all these aspects across multiple scales. At the same time, increasing bridge spans, harsher environmental conditions, and more stringent safety requirements demand additional integration of fluid dynamic concepts into bridge design, assessment, and maintenance practices.
This Special Issue aims to provide an interdisciplinary forum for high-quality research on fluid dynamics in bridge engineering, with a focus on modeling approaches, fluid-structure interaction mechanisms, and practical applications. Contributions addressing wind–structure interaction, hydrodynamic effects, sediment transport, scour processes, and related experimental or numerical methodologies are particularly encouraged. Both fundamental studies and applied research that advance theoretical understanding and engineering practice are welcome.
Keywords
fluid dynamics, bridge engineering, flow–structure interaction, computational fluid dynamics (CFD), bridge aerodynamics, hydrodynamic effects, scour and erosion, numerical and experimental modeling