椭球形浮空器热特性研究  

Study on Thermal Properties of Ellipsoid Aerostat

作　　者：孙程[1] 朱仁胜[1,2] 张月[1] 刘四洋[1] 沈健[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009 [2]滁州汽车与家电技术及装备研究院,安徽滁州239000

出　　处：《机械工程师》2016年第6期52-54,共3页Mechanical Engineer

基　　金：中航工业产学研专项项目(2013XKJH0004)

摘　　要：基于有限元软件Fluent,建立了椭球形浮空器的有限元模型,分析外界复杂环境对其热特性的影响,对不同工况下的浮空器热特性进行了数值模拟计算。在模拟计算过程中,充分考虑了风速、太阳辐射等外部环境因素对其热特性的影响,模拟了浮空器定点浮空中一天内不同时刻的气囊蒙皮温度变化,得到了其温度和温差随时间变化的曲线;还模拟了在升空过程中气囊蒙皮温度的变化情况,得到了其温度随浮空器升空高度的变化曲线。研究结果对浮空器的设计生产有实际的指导作用。Based on the finite element software Fluent, the finite element model of ellipsoidal aerostat is estahlished to analyze the impact of external complex environmental on its thermal properties, and the thermal properties of aerostat under different conditions are sinmlated in this paper. In the simulation process, the influence of wind speed, solar radiation and other external environmental factors on the thermal properties is fully taken into account, the changes of airbag skin temperature of aerostat floating in fixed point at different moments within a day is simulated, and the curve of the temperature and temperature difference changing with time is obtained; the changes of airbag skin temperature during blastoff is also simulated, and the curve of the temperature changing with the height of aerostat is obtained. The result of the study has great practical significance to the design and production of the aerostat.

关 键 词：浮空器 热特性 太阳辐射 数值模拟 

分 类 号：TP391.7[自动化与计算机技术—计算机应用技术]