The need for decision support after a flooding casualty requires the development of fast and accurate progressive flooding simulation procedures. Here, a new quasi-static technique is presented, proposing a differential algebraic formulation capable to consider independently the flooding process in the internal rooms. The proposed method is efficient while simulating long flooding chains along rooms connected by similar size openings, a condition that likely occurs on large passenger ships. Moreover, the computational performances of the simulation procedure have been enhanced by adapting the time step to the progressive flooding pace. The adoption of an adaptive time step algorithm reduces significantly the calculation time. The novel procedure has been tested on the recommended benchmark cases for flooding simulations, highlighting the accuracy and flexibility of the proposed method.

中文翻译：

---

船上渐进式洪水仿真的快速算法

洪水灾后需要决策支持，这需要开发快速准确的渐进洪水模拟程序。在这里，提出了一种新的准静态技术，提出了一种微分代数公式，该公式能够独立考虑内部空间的泛洪过程。所提出的方法在模拟沿类似大小开口连接的房间中的长洪水链时非常有效，这种情况很可能发生在大型客船上。此外，通过使时间步长适应渐进式洪水速度，提高了模拟程序的计算性能。自适应时间步长算法的采用大大减少了计算时间。该新程序已针对推荐的洪水模拟基准案例进行了测试，