Abstract
A particle / turbulence two-way coupling model, integrated with conventional stochastic and sub-grid stress models of three-dimensional Large Eddy Simulation (LES), has been applied to the particle-laden turbulent flow in a wave boundary layer developed over seabed with the aim to understand dynamic effects of the particle size and number density to the suspension process in shearing flow over the seabed. While the particle size affects local velocity fluctuations, the particle population significantly induces secondary large-scale flows varying over a scale of the wavelength, and intensifies the turbulent energy near the bed. The particle-induced turbulence may result in additional suspension from the bed, causing a recursive suspension process via the particle turbulence interaction in the boundary layer.
| Original language | English |
|---|---|
| Journal | Proceedings of the Coastal Engineering Conference |
| Publication status | Published - 2010 Dec 1 |
| Event | 32nd International Conference on Coastal Engineering, ICCE 2010 - Shanghai, China Duration: 2010 Jun 30 → 2010 Jul 5 |
Keywords
- Large eddy simulation
- Particle-fluid two-phase flow
- Wave boundary layer
ASJC Scopus subject areas
- Civil and Structural Engineering
- Ocean Engineering
- Oceanography