摘要
翼伞是应用于空降空投领域的一类重要气动减速装置,该文总体目标为采用格子玻尔兹曼方法研究不同翼伞曲面化伞型的气动仿真特性。在进行与试验数据的验证后,仿真分析不同伞型的气动曲线,得到其变化趋势和系数值差异。进行详细的流动特性分析对不同伞型的气动特性差异原因,还分析气室、小孔2种气流结构对气动特性的影响。采用传统有限元方法进行补充解释分析。结果充分证明格子玻尔兹曼方法进行翼伞气动仿真的可靠性。加入曲面化的伞型其升阻特性有明显提高,同时反映出气动特性的鲁棒性。气室结构对升阻特性提高有较大影响,而小孔结构影响程度较小。上述结论对翼伞试验和仿真研究具有重要的借鉴和指导意义。
The parafoil is a type of important aerodynamic retarding device used in the field of airdrop.The overall objective of this paper is to study the aerodynamic characteristics of different curved parafoil canopy types using the lattice Boltzmann method.After verifying with the experiment data,the aerodynamic curves of different types are simulated and analyzed,and the variation trend and coefficient value difference are obtained.A detailed flow characteristic analysis is carried out to explain the reasons for the difference of aerodynamic characteristics,and the influence of air chamber and small hole is also analyzed.The traditional finite element method(FEM)is used for supplementary interpretation and analysis.The results fully prove the reliability of the lattice Boltzmann method in the aerodynamic simulation of the parafoil.The lift and resistance characteristics of the curved types are obviously improved,and the robustness of aerodynamic characteristics is also reflected.The structure of the air chamber has a greater influence,while the small hole has lesser.The above conclusions have important reference and guiding significance for parafoil experiment and simulation research.
作者
王乙
杨春信
WANG Yi;YANG Chunxin
出处
《科技创新与应用》
2024年第6期1-6,共6页
Technology Innovation and Application
关键词
翼伞
计算流体力学
格子玻尔兹曼方法
气动特性
仿真研究
parafoil
computational fluid dynamics
lattice-Boltzmann method
aerodynamic characteristics
simulation study
