摘要
以平流层飞艇为研究对象,建立飞艇热特性模型并分析主要的热影响因素.通过有限拆分法,建立完整的平流层飞艇热特性模型.为了使建立的热模型能够适用于不同类型的飞艇,将其外形建模和表面离散化处理,分别采用分布参数法和集总参数法,对蒙皮单元和内部填充气体进行热特性数值计算.通过相关试验数据对建立的模型及其求解方法的可靠有效性进行验证.分别计算8种不同热影响因素作用下飞艇表面蒙皮温度及内部填充气体温度的变化,对每种因素的影响规律进行定性和定量的分析,得到飞艇热特性的主要敏感因素及不敏感因素,归纳出飞艇蒙皮出现极值温度的条件.比较不同热源对飞艇热特性的影响和规律,给出飞艇热特性模型中的可简化部分.
A thermal characteristics model of the airship was established and the main thermal influence factors were analyzed by taking stratosphere airship as the research object.A complete thermal model of the stratospheric airship was established with the finite split method.The shape was modeled and the surface was discretized in order to make the established thermal model applicable to different types of airships.The distribution parameter method and the lumped parameter method were used to calculate the thermal characteristics of the skin cell and the internal filling gas.The reliability and effectiveness of the established model and its solution method were verified by relevant experimental data.The changes in the surface temperature of the airship and the temperature of the internal filling gas under the influence of 8 different thermal influence factors were calculated,and the qualitative and quantitative effects of each factor were analyzed.The conditions for extreme temperature of the airship skin were summarized.The effects and laws of different heat sources on the thermal characteristics of airships were compared,and a simplified part of the thermal characteristics model of airships was given.
作者
程晨
王晓亮
CHENG Chen;WANG Xiao-liang(School of Aeronautics and Astronautics,Shanghai Jiaotong University,Shanghai 200240,China)
出处
《浙江大学学报（工学版）》
EI
CAS
CSCD
北大核心
2020年第1期202-212,共11页
Journal of Zhejiang University：Engineering Science
基金
国家自然科学基金资助项目（61733017）
上海市自然科学基金资助项目（18ZR1419000)
关键词
飞艇
影响因素
热特性
平流层
airship
sensitivity factors
thermal characteristics
stratosphere
