不同船体破口对水流出流特性影响研究

Research on the influence of different hull crevasses on the outflow characteristics of water

利用冲击动力学仿真,构建多种类型的船体破口,将冲击仿真所得的船体破口形状耦合进构建的多相流计算模型中,按照069型和067型登陆艇面临的实际堵漏环境,分析不同形状船体破口、不同尺寸船体破口、不同翻边船体破口的水流出流特性。研究表明,翻边撕裂较深的破口形状出流距离要远;外翻边破口的水流出流距离呈现先小于后大于内翻边破口的规律;400 mm、300 mm和200 mm破口相比同时刻下的出流距离相差较小,但冲击压强的稳定值相差较大,400 mm破口为34700 Pa,比300 mm破口大1300 Pa,比200 mm破口大5700 Pa。研究可为船体破损后的堵漏密封作业提供精准的数据支撑,也可为新型堵漏器材的设计提供技术指导。

Using impact dynamics simulation,various types of hull crevasses were constructed,and the hull crevasse shapes obtained by impact simulation were coupled into the constructed multiphase flow calculation model.The water outflow characteristics of hull crevasses of different shapes,hull crevasses of different sizes,and hull crevasses of different flanging hulls;research shows that the outflow distance of the fracture shape with deeper flanging tear is farther.The outflow distance is smaller at first and then larger than the inner flanging crevasse.Compared with the 400 mm,300 mm and 200 mm crevasses,the outflow distances at the same time are slightly different,but the stable value of the impact pressure is quite different.The 400 mm crevasse is 34700 Pa,1300 Pa larger than the 300 mm crevasse and 5700 Pa larger than the 200 mm crevasse.The research can provide accurate data support for the plugging and sealing operation after the hull is damaged,and can also provide technical guidance for the design of new plugging equipment.