【摘要】 特征有限元法是求解对流─弥散方程的一种有效方法，特别是将该法用于求解对流项占优的溶质运移问题时，其优越性尤为突出，解决了使用其它数值方法求解时所不可避免的数值弥散问题。本文首先介绍了这种方法的基本原理，提出了特征有限元法求解时确定运动质点所属单元的方法，随后以佳木斯地区为例，介绍了这一方法在求解地下水污染问题时的具体运用。更多还原

【Abstract】 Characteristic finite element method(CFEM)is a new numerical method for solving advection-dispersion equation. It is effective especially for the advection-dorminant problem. The numerical dispersion and oscillation,which is inevitable when using common numerical method,was effectively eliminated by adopting CFEM. The fundamental of CFEM was described and a simple but effec-tive method was put forward to determine the serial number of the element in which the moving particles located.A living example in Jiamusi City was given.更多还原