中文摘要：

针对两栖车辆水上行驶流场研究需求,基于计算流体动力学,对静水条件下两栖车辆的水上行驶流场进行了仿真分析。数学模型中,基本控制方程使用雷诺时均纳维斯托克斯方程,采用SSTk-ω湍流模型封闭方程,并使用流体体积法捕捉气液两相信息。几何区域离散使用混合网格,方程离散使用有限体积法,空间离散使用二阶迎风格式,时间离散使用改进的欧拉法。结果表明,仿真流场在形态和水动力特性上与实验流场都很相似,有较好的逼真度。

英文摘要：

Owing to the requirement of study on flow field around sailing amphibious vehicle, flowfield around amphibious vehicle that sailed over steady water was simulated based on Computaional Fluid Dynamics. Overseeing mathematic model, Reynolds Average Navier-Stokes equations is used for basic control equations, SST k- ω turbulence model is used for closure, and Volume of Fluid scheme is used to capture information of two phases. Geometrical area is discretized with hybrid grid, equations are discretized with Finite Volume Method, second order upwind scheme is used for spatial discretization, improved Euler scheme is used for temporal discretization, Result indicates that simulated flow field is so similar with experimental flow field on shape and hydrodynamic characteristic, The method takes good fidelity for the study.