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计算数学  2014 

二维土壤溶质输运方程基于POD方法的降阶CN有限体积元外推算法

, PP. 257-270

Keywords: 特征投影分解,土壤溶质输运方程,降阶CN有限体积元外推算法

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Abstract:

利用Crank-Nicolson(CN)有限体积元方法和特征投影分解方法建立二维土壤溶质输运方程的一种维数很低、精度足够高的降阶CN有限体积元外推算法,并给出这种外推算法的降阶CN有限体积元解的误差估计和算法的实现.最后用数值例子说明数值结果与理论结果相吻合,并阐明这种降阶CN有限体积元外推算法的优越性.

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