【摘要】 本文根据欧拉-拉格朗日坐标相结合解法、交替方向解法和有限单元法的基本思想,提出了求解二维饱和-非饱和溶质运移问题的交替方向特征有限单元法(ADCG)。计算实例结果表明,ADCG集这三种解法之优点,在克服数值弥散和数值波动方面和提高计算速度方面具有显著的优越性。更多还原

【Abstract】 Based on the Eulerian-Lagrangian approach and the alternating direction Galerkin technique, a characteristic alternating direction Galerkin finite element method is developed for the simulation of two-dimensional satu-rated-unsaturated solute transport in porous media. Practical examples demonstrate that the method has advantages in overcoming numerical diffusion and oscillation and ensuring high efficiency of computation.更多还原