Chapter
Dec 31, 2015
Bottom Shear Stresses in the Boundary Layers Under Waves and Currents Crossing at Right Angles
Publication: Coastal Engineering 1992
Abstract
This paper describes a two year experimental research programme investigating the influence of non-linear wave-current interactions on wave and current characteristics. The tests focus on the mean and oscillatory velocity components and shear stresses within the bottom boundary layer over a rough bed for cases where waves propagate at right angles to the line of the current flow. Bed shear stresses have been measured directly by means of a novel shear plate device. The aim of the research is to generate a reliable data set for use by modellers.
Results show that currents experience a significant change both in mean bed shear stress and apparent bed roughness when waves are superimposed. However, the oscillatory, wave-induced, bottom shear stress has been shown to be insensitive to the addition of an orthogonal current.
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Information & Authors
Information
Published In
Coastal Engineering 1992
Pages: 604 - 617
Copyright
© 1993 American Society of Civil Engineers.
History
Published online: Dec 31, 2015
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ASCE Technical Topics:
- Boundary layers
- Boundary shear
- Coastal engineering
- Coastal processes
- Coasts, oceans, ports, and waterways engineering
- Continuum mechanics
- Dynamics (solid mechanics)
- Engineering mechanics
- Flow (fluid dynamics)
- Fluid dynamics
- Fluid mechanics
- Hydrologic engineering
- Ocean currents
- Ocean waves
- Seismic waves
- Shear stress
- Shear waves
- Solid mechanics
- Stress (by type)
- Structural analysis
- Structural engineering
- Water and water resources
- Water waves
- Waves (fluid mechanics)
- Waves (mechanics)
Authors
Affiliations
Richard R. Simons
Senior Lecturer, Civil & Environmental Engineering Dept, UCL
Tony J. Grass
Reader, Civil & Environmental Engineering Dept, UCL.
Mehrdad Mansour-Tehrani
Researoh Fellow, Civil & Environmental Engineering Dept, University College London, Gower Street, London WC1E 6BT.
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