A three-dimensional hydrodynamic model in curvilinear co-ordinates with collocated grid

✍ Scribed by Jian Ye; J. A. McCorquodale; R. M. Barron

• Publisher: John Wiley and Sons
• Year: 1998
• Tongue: English
• Weight: 390 KB
• Volume: 28
• Category: Article
• ISSN: 0271-2091
• DOI: 10.1002/(sici)1097-0363(19981115)28:7<1109::aid-fld766>3.0.co;2-#

✦ Synopsis

A three-dimensional hydrodynamic model has been developed for turbulent flows with free surface. In the horizontal x-y-plane, a boundary-fitted curvilinear co-ordinate system is adopted, while in the vertical direction, a |-co-ordinate transformation is used to represent the free surface and bed topography or lower boundary. Using the finite volume method, the convection terms are discretized using Roe's second-order-accurate scheme. The governing equations are solved in a collocated grid system by a fractional three-step implicit algorithm that has been developed to handle the velocity -pressure -depth coupling problem of free surface incompressible fluid flows. The present study is the extension of previous work to three-dimensional turbulent flows. The model has been applied to three test cases. Comparison with available data shows that the model developed is successful, and is valuable to engineering application.