空气可压缩性对船舶破舱进水的影响

在船舶破舱进水过程中,船舱内外流体动力行为非常复杂。本文采用CFD方法研究了考虑空气可压缩性影响情况下的船舶破舱进水动力学问题。研究中建立了基于求解RANS方程的船舶破舱进水计算模型,对姿态固定的破损箱型驳船进水过程进行时域模拟。将数值模拟结果与模型试验结果进行比较,验证了本研究所采用的计算模型的有效性。对数值模拟结果进行分析,如舱内水位变化情况、水体流经破口及在舱内蔓延现象及空气可压缩性对船舶破舱进水过程的影响。

Study on the influence of air compressibility on ship damaged flooding

In the process of damaged ship flooding, the dynamic behavior of fluid inside and outside the compartments is very complicated. In this paper, the CFD method is used to study the hydrodynamics water flooding into damaged ship with the effect of air compressibility. The numerical model based on solving the RANS equations is used to simulate the flooding process of a damaged barge fixed in calm water. The validity of the model is verified by comparing the numerical results with the model test results. In addition, the simulation results are analyzed, including the change of water level in the compartment, the water behavior through the opening and inside the compartments, and the influence of air compressibility on the flooding process.