水下垂直发射出筒过程数值模拟研究

Research on process of underwater vertical launch by numerical simulation

水下垂直发射出筒过程涉及适配器约束、气液固三相耦合和横向来流等复杂问题,是潜射航行体水中段、出水段和空中段的基础和前提。该研究针对M51潜射航行体在水下垂直发射时出筒过程中的典型现象与问题,基于雷诺平均数值模拟方法,结合VOF多相流模型、SST k-ω湍流模型、Schnerr-Sauer空化模型和重叠网格技术,建立了航行体水下垂直发射的全尺寸三维数值模型,分析了不同筒口气团压强与体积、发射速度、发射深度和横向来流等多种因素影响下,航行体出筒阶段的流场与壁面载荷特性。

The process of underwater vertical launching involves complex issues such as adapter constraints,gas-liquid-solid three-phase coupling and lateral flow.It is the basis and prerequisite for the underwater navigation and air navigation of the submarine-launched vehicle.Combined with the typical phenomena of the underwater vertical launch process,based on the Reynolds-averaged numerical simulation method,the VOF multiphase flow model,the SST k-ωturbulence model,the Schnerr-Sauer cavitation model and overset grid,a full-scale three-dimensional numerical model of the underwater vertical launch of the vehicle is established.The flow and load characteristics of the vehicle at the out-of-tube stage are simulated in various environments such as gas pressure and volume above the launch tube,launch speed,launch depth and lateral flow.