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椭圆型缓坡方程的一个有效的有限元解

, PP. 117-123

Keywords: 有限元方法,水波,数值解

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Abstract:

将海绵层消波的方法用于有限元方法中,提出了缓坡方程的一种有效的有限元求解方法.在应用有限元法求解椭圆型缓坡方程时,通过在方程中加摩阻项,并在入射边界(波浪由此边界进入计算域)处使用不连续单元,将绕射势从总势中分离出来,在边界上利用海绵层进行消波处理,有效地消除了由于引用放射边界条件引起的误差和数值反射现象.

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