A three dimensional k-epsilon-A(p) model for water-sediment movement

作者：Liu Cheng^*; Shen Yong-Ming

来源：International Journal of Sediment Research, 2010, 25(1): 17-27.

DOI：10.1016/S1001-6279(10)60024-8

• Three dimensional k-epsilon-A(p) model
• Liquid-particle flow
• Two-fluid model
• Channel bend
• Bed deformation
• Curvilinear coordinates

A three-dimensional k-epsilon-A(p) two-fluid turbulence model is proposed to study liquid-particle two-phase flow and bed deformation. By solving coupled liquid-phase and solid-phase governing equations in a finite-volume method, the model can calculate the movement of both water and sediment. The model was validated by water-sediment transport in a 180 degrees channel bend with a movable bed. The validation concerns two-phase time-averaged velocities, bed deformation, water depth, depth-averaged streamwise velocity, cross-stream bed profiles, and two-phase secondary flow velocity vectors. The agreement between numerical results and experimental results was generally good. The comparisons of the numerical results of different models show that the three-dimensional k-e-Ap two-fluid turbulence model has a relatively higher accuracy than one-fluid model.

• 出版日期2010-3
• 单位海岸和近海工程国家重点实验室; 珠江水利委员会珠江水利科学研究院; 大连理工大学