We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Numerical investigation of fluid mud motion using a three-dimensional hydrodynamic and two-dimensional fluid mud coupling model.
- Authors
Yang, Xiaochen; Zhang, Qinghe; Hao, Linnan
- Abstract
A water-fluid mud coupling model is developed based on the unstructured grid finite volume coastal ocean model (FVCOM) to investigate the fluid mud motion. The hydrodynamics and sediment transport of the overlying water column are solved using the original three-dimensional ocean model. A horizontal two-dimensional fluid mud model is integrated into the FVCOM model to simulate the underlying fluid mud flow. The fluid mud interacts with the water column through the sediment flux, current, and shear stress. The friction factor between the fluid mud and the bed, which is traditionally determined empirically, is derived with the assumption that the vertical distribution of shear stress below the yield surface of fluid mud is identical to that of uniform laminar flow of Newtonian fluid in the open channel. The model is validated by experimental data and reasonable agreement is found. Compared with numerical cases with fixed friction factors, the results simulated with the derived friction factor exhibit the best agreement with the experiment, which demonstrates the necessity of the derivation of the friction factor.
- Subjects
NUMERICAL analysis; FLUID dynamics; MUD; HYDRODYNAMICS; TWO-dimensional models; SHEARING force
- Publication
Ocean Dynamics, 2015, Vol 65, Issue 3, p449
- ISSN
1616-7341
- Publication type
Article
- DOI
10.1007/s10236-015-0815-0