摘要
利用Solidworks和Fluent软件平台,对两栖车辆进行三维建模,采用滑移网格方法实现纵倾姿态的变化,得出行驶阻力随速度的变化规律。编写UDF程序得出阻力成分构成,并用最小二乘法对模拟数据进行曲线拟合,得出粘压阻力与速度的1.91次方成比例,兴波阻力与速度的3.62次方成比例,摩擦阻力与速度的1.82次方成比例,模拟结果与AD报告基本一致,证明用此方法对两栖车辆进行阻力成分分析可行。
Using Solidworks and Fluent software, the three-dimensional model of the amphibious vehicle is constructed, the changing of trim is realized through sliding mesh, and the variation of resistance with speed is obtained. The resistance components are calculated through UDF program, the mathematical expression is given by curve fitting the simulation data base on the polynomial least square method, the result show that the viscous pressure resistance is approximately 1.91 power of the speed, the wave resistance is approximately 3.62 power of the speed, the frictional resistance is approximately 1.82 power of the speed. The simulation results are consistent with AD report,which prove that the method is feasible for analyzing resistance components of amphibious vehicle.
出处
《舰船科学技术》
北大核心
2013年第12期139-143,共5页
Ship Science and Technology
关键词
CFD
两栖车辆
兴波阻力
粘压阻力
摩擦阻力
CFD
amphibious vehicle
wave resistance
viscous pressure resistance
frictional resistance
