Author(s): Jin Woo Lee; Minha Choi; Yong-Sik Cho
Linked Author(s):
Keywords: Free surface flows; Non-hydrostatic pressure; Pressure boundary condition; Wave Propagation
Abstract: In this study, a three-dimensional non-hydrostatic pressure model for free surface flows using a normalized vertical coordinate system is presented. To strongly couple the free surface and nonhydrostatic pressure with the momentum equations, a double predictor-corrector method (Chen, 2003) is employed. This research is especially focused on implementing the dynamic boundary condition—a zero pressure condition at the free surface if the atmospheric pressure is ignored. It is shown that the boundary condition can be specified easily with a slight modification to existing models (Casulli, 1999). It is also shown that the proposed method is less dependent of a number of vertical layers used and more accurate than the existing models.
Year: 2010