摘要
利用CFD软件Fluent,根据Spalart-Allmaras模型建立了飞行汽车外流场的三维湍流流动模型。通过数值模拟,得到飞行汽车在不同攻角下的升阻力系数变化规律。研究结果表明,在所选攻角范围内,随着攻角的增大,飞行汽车的升阻力系数不断增大,当攻角达到14°左右时,飞行汽车由于气流分离而发生失速。Fluent为飞行汽车的气动特性分析提供了重要依据。
The modeling three dimensionahurbulence model of flying car according to Spalart Allmaras is established by using the CFD software Fluent. The lift and drag coefficient variation characteristics in the different angle of attack will be obtained by numerical simulation. The results show that within the selected scope of attack angle, the lift and drag coefficient of flying car are increased gradually with the increasing of angle of attack, the flying car will be stalled due to flow separation when the angle of attack is at about 14 degree. The CFD software Fluent provides the important basis for the aerodynamic characteristics analysis of flying car.
出处
《机械工程师》
2014年第5期87-89,共3页
Mechanical Engineer
基金
航空科学基金(HF201003088)
关键词
FLUENT
飞行汽车
数值模拟
气动特性
FLuent
flying car
numerical simulation
aerodynamic characteristics
