首页|Numerical simulation of fluid-thermal-structural coupling characteristics of stratospheric non-rigid airship

Numerical simulation of fluid-thermal-structural coupling characteristics of stratospheric non-rigid airship

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
The voluminous stratospheric non-rigid airship is very sensitive to the external thermal environment.The temperature change of internal gas caused by the variation in the external ther-mal environment and wind speed will lead to a change in the shape and buoyancy of the airship,thereby affecting its flight control.The traditional static analysis method is difficult to accurately reflect this fluid-thermal-structural coupling process.In this paper,the iterative analysis method was established for the fluid-thermal-structural coupling effect of stratospheric non-rigid airship based on the models of fluid,thermal,and structural deformation.Considering the load such as the internal thermal effect and external flow field of the airship,the simulation of the thermo-induced structural deformation effect was conducted using Fluent and Abaqus software.The influ-ence of local time and external wind speed on the structural deformation,volume,and equilibrium altitude of the airship was analyzed.The results demonstrate that,at low wind speed,the influence of aerodynamic pressure on the deformation of the airship is negligible.However,a great amount of heat is carried away by the wind,then the structural deformation caused by internal and external pressure difference is alleviated and the equilibrium altitude of the airship change obviously.This can serve as a guideline for the design and flight test of the long-endurance stratospheric non-rigid airship.

Altitude changeFluid-thermal-structural couplingStratospheric non-rigid air-shipStructural deformationWind speed

Huafei DU、Mingyun LYU、Chuan YU、Yifei WU、Yongmei WU、Kangwen SUN

展开 >

School of Aeronautic Science and Engineering,Beihang University,Beijing 100191,China

Linzhou(Ningbo)Technology Co.Ltd,Yuyao 315042,China

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaNational Natural Science Foundation of China

523025115220245452202513

2024

10.1016/j.cja.2024.05.027

中国航空学报(英文版)
中国航空学会

中国航空学报(英文版)

CSTPCDEI
影响因子：0.847
ISSN：1000-9361
年,卷(期)：2024.37(9)
  • 2