Rain–wind-induced vibration

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Table of contents

1 Introduction 
1.1 Background and motivations
1.2 Research objectives
1.3 Assumptions and limitations
1.4 Cable vibrations in cable-stayed bridge system
1.4.1 Parametric excitation vibration
1.4.2 Vortex-induced vibration
1.4.3 Wake galloping
1.4.4 Rain–wind-induced vibration
1.5 Literature review: rain–wind-induced vibration
1.5.1 Field measurement
1.5.2 Wind tunnel tests
1.5.3 Theoretical analysis
1.5.4 Numerical simulation
1.6 Literature review: multiphase interface tracking algorithm
1.6.1 Advecting the color function
1.6.2 Front tracking method
1.6.3 Level set method
1.6.4 Phase field method
1.6.5 CIP method
1.6.6 Volume of fluid method
1.7 Research contents
2 Numerical simulations for RWIV of stay cables based on the separated method 
2.1 Introduction
2.2 Assumptions and limitations
2.3 Governing equations of the separated method for RWIV of stay cables
2.4 Boundary conditions and parameter selections
2.4.1 Boundary conditions
2.4.2 Parameter selections
2.5 Numerical simulations for RWIV of stay cables based on the separated method 33
2.5.1 Vortex shedding characteristics analysis
2.5.2 Pressure distribution characteristics analysis
2.5.3 Aerodynamic forces characteristics analysis
2.6 Brief summary
3 Numerical simulations of RWIV based on semi-coupled and coupled methods 
3.1 Introduction
3.2 Assumptions, limitations and preparations for numerical model
3.2.1 Assumptions
3.2.2 Limitations
3.2.3 Preparations
3.3 Numerical simulation of RWIV based on semi-coupled method
3.3.1 Governing equation for semi-coupled method
3.3.2 The rainwater morphology evolution on a stay cable
3.4 Numerical simulation of RWIV based on the coupled method
3.4.1 Governing equation for the coupled method
3.4.2 Computational domain decomposition, boundary conditions and parameter selections
3.4.3 Rainwater morphology evolution validation on a stay cable subjected to gravity and surface tension
3.4.4 Rainwater morphology evolution on a stay cable subjected to gravity, surface tension and wind
3.5 Brief summary
4 Multiphase and multiscale model for rain–wind-induced vibrations(RWIV)
4.1 Introduction
4.2 Multiphase and multi-scale model
4.2.1 Governing equations for incompressible background fluid
4.2.2 Method for tracking Lagrangian particles
4.2.3 Two-way coupling term and transformation rules
4.3 Numerical schemes for multiphase and multiscale model
4.3.1 General method
4.3.2 Temporal discretization
4.3.3 Spatial discretization
4.3.4 Smoothness for the source term in LES zone for Lagrangian particle tracking
4.4 Numerical considerations for multiphase and multiscale model
4.4.1 Rain model
4.4.2 Transformation from the physical model to computational model
4.4.3 Boundary conditions
4.4.4 Parameter selections
4.4.5 Parameter definitions
4.4.6 Modeling limitations
4.5 Brief summary
5 Rainwater morphology and aerodynamic characteristics of a cylinder in RWIV
5.1 Introduction
5.2 Macroscopic analysis of the lift/drag force coefficient evolution
5.3 Collision–splashing pattern
5.3.1 Rainwater morphology evolution analysis
5.3.2 Aerodynamic characteristics analysis
5.4 Accumulation–slipping pattern
5.4.1 Rainwater morphology evolution analysis
5.4.2 Aerodynamic characteristics analysis
5.5 Formation–breaking pattern
5.5.1 Rainwater morphology evolution analysis
5.5.2 Aerodynamic characteristics analysis
5.6 Dynamic equilibrium state
5.6.1 Rainwater morphology evolution analysis
5.6.2 Aerodynamic characteristics analysis
5.7 Brief summary
6 Conclusions and Recommendations 
6.1 Conclusions
6.2 Recommendations
References