摘要
为了提高两栖车辆水中快速性,从两栖车体行动阻力分析出发,提出了运用组合建模法在UG中建立两栖车辆的多区域多形状的物理模型;运用了HyperWorks结合计算速度和计算精度进行单元网格划分;设计了在不同的行驶环境下,利用流体动力学进行仿真分析;采用了k-ε两方程湍流模型,对两栖车辆的粘性绕流场进行了仿真。结果表明:车体尾部形状和伸出的车轮对试验绕流场都有较大的影响;以及车辆行动部件状态的改变可以有效地减小两栖车辆在水中航行时的阻力;同时证明了行驶环境的改变对阻力也有较大的影响。最后给出了试验数据,为今后的车体设计和分析提供一定的指导作用。
In order to improve the speed of amphibious vehicle drive in the water, the article proposed that using ＂Combined Modeling＂ method in UG to build multi-regional and multi-shape model from considering the resistance of amphibious vehicle; then we combined with the computation speed and accuracy, using HyperWorks software to mesh the units of the model; also we designed that in different driving conditions, using hydrodynamics analysis soft- ware to get the model＇s simulation analysis results ; at last we do a simulation of viscous flow round of amphibious ve- hicle by using k-ε two-equation turbulent model. The results show that： the shape of bodywork tail and the out- stretched wheel both have great influence on the viscous flow field ; and the vehicle driving parts position＇s change can reduce the resistance of the vehicle driving in water; meanwhile the article proved that the drive environment change also has much more effect on resistance of vehicle driving in water. Finally the experimental data was given which proved the above conclusion, also these experimental data can be provided as a reference for the designer who want to design and analysis bodywork in the future.
出处
《计算机仿真》
CSCD
北大核心
2013年第3期173-176,183,共5页
Computer Simulation
基金
江苏省重大科技成果转化项目(BA2009099)
江苏省产学研前瞻性联合研究项目(BY2012179)
