有限元法是一种有效的数值方法,可用来求解数学物理和工程设计中具有初、边值的偏微分方程。有限元法最初是由一些工程师提出,用来分析飞机整体结构问题的,随后此法在电磁、流体力学等领域也得到了应用。近年来,国外在地表水文模拟中较广泛的应用了有限元法。 Finite element method is an effective numerical method, which can be used to solve partial differential equations with initial and boundary values ​​in mathematical physics and engineering design. Finite element method was originally proposed by some engineers to analyze the overall structural problems of the aircraft, then this method has also been applied in the fields of electromagnetics and fluid mechanics. In recent years, abroad, surface hydrology simulation more widely used finite element method.