[author_cn_name].[cn_title][J].空军工程大学学报:自然科学版,[year_id],[volume]([issue]):[start_page]-[end_page] 基于蒙特卡洛仿真的高空尾涡运动特性- Analysis of Motion Characteristics of High Altitude Wake Vortices Based on Monte Carlo Simulation
文章摘要
魏志强,李晓晨.基于蒙特卡洛仿真的高空尾涡运动特性[J].空军工程大学学报:自然科学版,2021,22(5):9-14
基于蒙特卡洛仿真的高空尾涡运动特性
Analysis of Motion Characteristics of High Altitude Wake Vortices Based on Monte Carlo Simulation
  
DOI:
中文关键词: 空中交通管理  尾涡流场  尾涡下沉运动  蒙特卡洛仿真  飞行安全
英文关键词: air traffic management  wake vortex field  sinking motion of wake vortex  Monte Carlo Simulation  flight safety
基金项目:国家自然科学联合基金(U1533116, U1633125);航空科学基金(20185567018);2020年天津市研究生科研创新项目(2020YJSS089)
作者单位
魏志强,李晓晨 中国民航大学空中交通管理学院 天津 300300 
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中文摘要:
      飞机在飞行过程中形成的尾涡流场是飞行安全重要影响因素。为研究飞机尾流在12 500 m以上高空空域对下方飞机造成的影响,基于尾涡仿真快速计算模型建立了尾涡物理模型,采用蒙特卡洛方法对不同飞行高度处尾涡涡核的下沉高度进行仿真实验,分析了高空与中低空的涡核下沉高度差异性;然后计算不同飞机质量及大气湍流度下的高空尾涡涡核下沉高度,并对高空尾涡涡核下沉高度的影响因素进行分析。研究发现:与中低空相比,高空尾涡涡核下沉高度有所增加,平均增量为42.4~49.7 m;减小飞机质量可以降低垂直高度上的尾涡影响范围;当涡流耗散率超过1.2×10-4m2/s3后,高空尾涡涡核下沉高度的变化较为缓慢。研究结果为高空尾流垂直间隔缩减研究提供参考。
英文摘要:
      Wake vortex field formed in the process of flight is an important factor exerting an influence on the flight safety. In order to study the impact of wake vortex on the aircraft below at altitudes above 12,500 m, a physical model of aircraft wake vortex is established by a fast simulation method of wake vortex, and the sinking height of wake vortices at different flight altitudes is also calculated by Monte Carlo simulation. The difference in the sinking height of vortex core at high altitude and mid low altitude is analyzed. Then, the sinking height of high altitude wake vortices are calculated under condition of different aircraft weights and atmospheric turbulence intensities. The result shows that compared with those in medium and low altitudes, wake vortices in high altitudes have larger sinking height on an average increment of 42.4~49.7 m. Reducing the aircraft weight can reduce the vertical impact range of the high altitude wake vortex. After the atmospheric turbulence intensity exceeds 1.2×10-4 m2/s3, the sinking height of high altitude wake vortex core changes slowly. These results give a reference to some lights on the reduction of vertical separation of high altitude wake vortex.
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