A new efficient 3D non-hydrostatic free-surface flow model for simulating water wave motions |
| |
| Authors: | Doo Yong Choi Chin H Wu |
| |
| Institution: | Department of Civil and Environmental Engineering, 1269D Engineering Hall, University of Wisconsin-Madison, Madison, WI 53706, USA |
| |
| Abstract: | A new three-dimensional, non-hydrostatic free surface flow model is presented. For simulating water wave motions over uneven bottoms, the model employs an explicit project method on a Cartesian the staggered gird system to solve the complete three-dimensional Navier–Stokes equations. A bi-conjugated gradient method with a pre-conditioning procedure is used to solve the resulting matrix system. The model is capable of resolving non-hydrostatic pressure by incorporating the integral method of the top-layer pressure treatment, and predicting wave propagation and interaction over irregular bottom by including a partial bottom-cell treatment. Four examples of surface wave propagation are used to demonstrate the capability of the model. Using a small of vertical layers (e.g. 2–3 layers), it is shown that the model could effectively and accurately resolve wave shoaling, non-linearity, dispersion, fission, refraction, and diffraction phenomena. |
| |
| Keywords: | Free-surface flow Waves Non-hydrostatic Projection method Partial-cell bottom treatment Finite difference model |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
