摘要
针对冷云辐射对超压气球热动力特性影响的问题,提出融合冷云辐射特性的超压气球热动力学模型。研究不同相对高度条件下,冷云对超压气球热环境的影响。分析冷云高度、厚度、云粒子有效半径、温度、含水量等特征,建立冷云的辐射吸收、透过和反射特性模型。在动力学、运动学和热力学分析的基础上,建立包含冷云辐射特性的超压气球热动力学模型,开发仿真计算程序,利用实测数据验证热动力学模型和仿真程序的准确性。利用风云卫星冷云数据,仿真分析冷云辐射影响下的超压气球热动力学特性,结果显示:冷云会降低超压气球温度,影响超压气球升空速度和高度,当云层厚度或云层温度到达一定条件时,超压气球将无法抵达预期驻留高度。
To investigate the influence of cold cloud radiation on the thermal-dynamic characteristics of superpressure balloons,this paper proposed a thermal-dynamic model that incorporated cold cloud radiation characteristics for super-pressure balloons.First,the paper probed into the influence of cold cloud on the thermal environment of a super-pressure balloon at different relative heights.Then,it analyzed cold cloud characteristics including height,thickness,effective radius of cloud droplet,temperature,and water content and further described the radiation absorption,transmission,and reflection equations of cold cloud.On the basis of dynamic,kinetic,and thermal analyses,a thermal-dynamic model that incorporated cold cloud radiation characteristics was established for the superpressure balloon,and a computer program was developed.Finally,measured data was used to verify the accuracy of the thermal-dynamic model and the program.Cold cloud data from the Fengyun satellite was introduced to simulate the thermal-dynamic characteristics of a super-pressure balloon under the influence of cold cloud radiation.The results show that cold cloud may lower the temperature of the super-pressure balloon and therefore exert influence on its flight velocity and altitude.When the cloud thickness and temperature reach a critical condition,the super-pressure balloon could not reach its designed flight altitude.
作者
贺澜
刘强
杨燕初
祝榕辰
周江华
HE Lan;LIU Qiang;YANG Yanchu;ZHU Rongchen;ZHOU Jianghua(Aerospace Information Research Institute,Chinese Academy of Sciences,Beijing 100094,China;University of Chinese Academy of Sciences,Beijing 101408,China)
出处
《北京航空航天大学学报》
北大核心
2025年第9期3117-3129,共13页
Journal of Beijing University of Aeronautics and Astronautics
基金
国家重点研发计划(2022YFB3903005-01)
中国科学院青年创新促进会(2020133)。
关键词
超压气球
热力学特性
动力学特性
冷云环境
辐射特性
super-pressure balloon
thermal characteristics
dynamic characteristics
cold cloud environment
radiation characteristic
