Author(s): Dahong Chen; Thomas Ackermann; Christian Jokie; Jorgen Kongeter
Linked Author(s): Dahong Chen
Keywords: Navier-Stokes equations; Incompressible viscous flow; Projection methods; Finite element; ALE method; Free surface
Abstract: Free surface flows are very common flow phenomena in the hydraulic engineering. In this paper, a newly developed model to simulate such flows is presented. To solve the free surface problems, the model applied the arbitrary Lagrangian-Eulerian (ALE) kinematic description of the fluid domain, in which the movement of the mesh nodes is independent on the fluid motion. In the model, a new algorithm is developed for the mesh rezoning. It has been found that the ALE formulation is very efficient and allows a more accurate treatment of free surfaces than the purely Eulerian method. Compared to the Lagragian method it allows the handling of greater distortions in the fluid motion.
Year: 2001