摘要DORA(double order approximation)方法是近年提出的求解动力学方程的一种算法。DORA方法物理意义明显,不受库朗稳定性条件约束,无条件稳定。DORA方法和传统典型算法相比最大的优点是可以计算初始水深是零的情况。在溃坝模拟中,经与解析解相比较可知,DORA算法在间断波附近没有出现数值振荡,水位、流速和解析解均比较吻合。证明DORA算法能很好模拟溃坝波的运动。
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