Flow Hydrodynamics and Associated Kinetic Energy Budgets Produced by Four Piers in Square Configuration
Publication: Journal of Engineering Mechanics
Volume 149, Issue 10
Abstract
Turbulent flow characteristics around four-pier arrangements are experimentally investigated using particle image velocimetry (PIV). Four wall-mounted piers were arranged in a square configuration at 0° and 90° orientations with different gap-to-pier diameter () ratios. The study shows an intense horseshow vortex system in front of the pier group at 90°. The kinetic energy increased almost six times with ratio for a square configuration at 90° orientation for a given flow condition. Vortex shedding frequency was studied using spectral analysis and Strouhal number corresponding to dominant frequencies for all cylindrical configurations. High energy vortices were observed in between the piers indicating high turbulence in the region. The square configurations with at 0° and at 90° were found to produce intense turbulence in the flow field as compared to other configurations for the given flow condition. The kinetic energy budget showed that the production rate was significantly higher than the dissipation rate. The square configuration with causes minimal perturbations along the centerline when placed at a 90° orientation.
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Data Availability Statement
Data available upon request from the authors: The data that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The authors sincerely express their gratitude to the colleagues and staffs of the Hydraulics laboratory of Department of Civil Engineering, IIT Bombay, for their contributions and help. We hereby acknowledge the Department of Science and Technology, New Delhi for their help in setting up the PIV system. The authors are thankful to the editors and reviewers for their constructive comments, which improved the manuscript significantly.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 149 • Issue 10 • October 2023
Copyright
© 2023 American Society of Civil Engineers.
History
Received: Jan 21, 2023
Accepted: Jun 7, 2023
Published online: Aug 8, 2023
Published in print: Oct 1, 2023
Discussion open until: Jan 8, 2024
ASCE Technical Topics:
- Budgets
- Business management
- Computational fluid dynamics technique
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering materials (by type)
- Engineering mechanics
- Financial management
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Hydraulic engineering
- Hydraulic structures
- Hydrologic engineering
- Kinetics
- Materials engineering
- Particles
- Piers
- Ports and harbors
- Practice and Profession
- Solid mechanics
- Turbulence
- Turbulent flow
- Vortices
- Water and water resources
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