某轮式两栖车水动力仿真分析与性能优化

Hydrodynamic Simulation Analysis and Performance Optimization of a Wheeled Amphibious Vehicle

轮式两栖车由于车轮处凸起和开槽,其外形结构与常规船体相比具有较大的差异,水上运动性能也更加复杂。用传统理论计算,很难准确估计其水阻力及其分布。本文采用水动力分析软件FLUENT对初始设计模型进行仿真分析,根据仿真结果和各区域压力分布情况,对车体外形和重量重心分布进行多轮有针对性的优化,并对最终优化结果进行仿真分析和水池试验验证,最后得出满足初始任务目标要求的车体构型。该项工作可为后续两栖车车体构型设计提供借鉴。

Due to the protrusion and slotting at the wheels,the shape and structure of the wheeled amphibious vehicle is quite different from that of the conventional hull,and the water motion performance is also more complex.With traditional theoretical calculations,it is difficult to accurately estimate the water resistance and its distribution.In this paper,the hydrodynamic analysis software FLUENT is used to simulate and analyze the initial design model,and according to the simulation results and the pressure distribution in each region,the shape and weight center of gravity distribution of the vehicle body are optimized for multiple rounds,and the final optimization results are simulated and verified by the water tank test,and finally the vehicle body configuration that meets the requirements of the initial mission objectives is obtained.This work also provides a reference for the subsequent design of the amphibious vehicle body configuration.