To predict complicated three dimensional flow, a modified K-ε turbulence model is derived. The governing equations of turbulent flow over irregular boundary are developed by analyzing the solid-liquid two- phase the...To predict complicated three dimensional flow, a modified K-ε turbulence model is derived. The governing equations of turbulent flow over irregular boundary are developed by analyzing the solid-liquid two- phase theoretical flow model. And a perilal- cell parameter is introduced to treat irregular boundary. It shows curved boundaries and internal obstacles or islands. A simple but powerful method is described that is based on the concept of a fractional volume of fluid (VOF). This method is shown tO be efficient to track complicated free surfaces.It shows that the program established can simulate almost all kinds of turbulent flow in hydraulic engineering.展开更多
文摘To predict complicated three dimensional flow, a modified K-ε turbulence model is derived. The governing equations of turbulent flow over irregular boundary are developed by analyzing the solid-liquid two- phase theoretical flow model. And a perilal- cell parameter is introduced to treat irregular boundary. It shows curved boundaries and internal obstacles or islands. A simple but powerful method is described that is based on the concept of a fractional volume of fluid (VOF). This method is shown tO be efficient to track complicated free surfaces.It shows that the program established can simulate almost all kinds of turbulent flow in hydraulic engineering.
