| 大气湍流引起飞机颠簸的理论分析和数值试验 |
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| 引用本文： | 李子良,黄仪方.大气湍流引起飞机颠簸的理论分析和数值试验[J].中国海洋大学学报(自然科学版),2008,38(6). |
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| 作者姓名： | 李子良 黄仪方 |
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| 作者单位： | 1. 中国海洋大学海洋气象系海气相互作用和气候实验室,山东,青岛,266100
2. 中国民航飞行学院空中交通管理学院,四川,广汉,618307 |
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| 摘 要： | 基于飞机载荷因数变量方程、无量纲的大气垂直运动方程和热力学方程,建立起描述大气湍流和飞机颠簸的湍流模型,并对该模型进行理论分析和数值试验.研究指出,负的理查森数(Ri)对应着静力不稳定和动力不稳定流动,在不稳定大气层结条件下,当Ri<-Ra/PrRe2时,对流状态的大气运动必将由对流转变成湍流,并对运行于其中的飞机产生飞机颠簸.但在稳定大气层结条件下,当理查森数大于临界理查森数时(Ri>Ric=-Ra/PrRe2),正的Richardson数是动力稳定的,非对流状态的大气运动表现为重力波.当理查森数小于临界理查森数(O
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| 关 键 词： | 重力波 大气湍流 对流运动 飞机颠簸 |
Numerical Simulation and Dynamical Analysis of Atmospheric Turbulence Influence on the Aircraft Bumps |
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| LI Zi-Liang,HUANG Yi-Fang.Numerical Simulation and Dynamical Analysis of Atmospheric Turbulence Influence on the Aircraft Bumps[J].Periodical of Ocean University of China,2008,38(6). |
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| Authors: | LI Zi-Liang HUANG Yi-Fang |
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| Institution: | LI Zi-Liang1,HUANG Yi-Fang2(1.Ocean-Atmosphere Interaction , Climate Laboratory,Dept.of Marine Meteorology,Ocean University of China,Qingdao 266100,China,2.Department of Air Traffic Management China Civil Aviation Flying College,Guanghan 618307,China) |
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| Abstract: | Based on the aircraft loading coefficient variable equation,which is obtained from the equation of aircraft dynamics,the aircraft bumps are studied.The results show that the aircraft bumps are mainly determined on the vertical wind velocity of the flow.The mathematical model of atmospheric turbulence and aircraft bumps is derived from the vertical motion equation and the thermodynamic equation,which is based on the non-dimensional Navier-stokes equations.Numerical simulation of the model show that gravity w... |
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| Keywords: | gravity waves atmospheric turbulence convectional unstable aircraft bumps |
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