Acceleration Effects on Fluid-Sediment Interaction
Abstract
The long-term goals of this research are: (1) to identify all relevant physical processes that participate in and contribute significantly to sediment transport in near-shore coastal waters; (2) to investigate each of the identified processes in order to understand the underlying physics in a quantitative manner; (3) to develop simple predictive models for each process; and (4) to incorporate the simple predictive process-models in a predictive model for beach profile response to the action of waves and currents. The present research is concerned with the effect of fluid accelerations, which is synonymous to pressure-gradients, on fluid-sediment interaction in near-shore waters, i.e. under near-breaking or broken waves. In particular, the objective is to ascertain the importance of the subsurface sediment transport rate induced purely by the strong pressure gradient (acceleration) associated with the passage overhead of the steep forward-leaning front of a near-breaking or broken wave relative to the surficial sheet flow sediment transport rate induced by shear stresses and pressure gradients.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2006
- Accession Number
- ADA522452
Entities
People
- Ole S. Madsen
Organizations
- Massachusetts Institute of Technology