学术
摘 要:
建立了有顶孔的平面圆形降落伞的轴向和径向动量方程，使用数值方法计算出选定的降落伞在主充气过程中各种参数的变化，对降落伞的主充气过程进行了动态仿真．在使用动量方程计算出的的充气模型的基础上，利用降落伞在各个时间结点时的外形和下降速度等相关数据，采用计算流体力学的方法和准定常假设，对降落伞充气过程中的流场进行了模拟和分析，对降落伞充气过程的机理及流场衍变情况进行了探讨．[著者文摘]
文章出处:
《航空动力学报》-2008年23卷1期 -87-93页
栏目信息:
分 类 号:
文献标识码:
A
文章编号:
1000-8055（2008）01-0087-07
Analysis of dynamic simulation and fluid field of parachute in inflation stage
PAN Xing, HU Li, CAO Yi-hua （School of Aeronautic Science and Technology, Beijing University of Aeronautics and Astronautics, Beijing 100083, China）
Abstract:
The axis-radial momentum equations of circular flat parachute were established the changing parameters of a selected parachute were calculated for dynamic simulation of the inflation process. Accoroling to the inflation model calculated by the momentum equa- tion, based on the shape and descent velocity of the parachute at fixed nodes of time, the fluid field was simulated and analyzed according to computational fluid dynamics method under quasi-steady hypothesis. The mechanism of inflation and evolvement of fluid field were analyzed.[著者文摘]
Key words:
parachute; inflation; simulation; CFD （computational fluid dynamics）
基金资助:
国家自然科学基金资助项目（10577003）
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