Research on the Numerical Simulation of Aircraft Carrier Air Wake
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摘要: 为研究舰载飞机进舰着舰过程中航空母舰尾流的影响,选取了一个尾流模型在微机的MATLAB环境中模拟其速度的空间分布.根据成因将紊流分为4个组成部分:自由紊流分量的功率谱用成形滤波器法模拟,稳态分量通过线性插值得到,周期性分量可直接计算得到,而航母诱导的随机紊流分量则通过MATLAB的SIMULINK工具包模拟.模拟表明周期性分量占主导地位.此模型需要实验数据和船上实测数据进一步确认.Abstract: A model of carrier air wake is selected to simulate the spatial distribution of velocity of air wake in MATLAB on a PC for study of environmental effects on approaching and landing of the carrier base aircraft. The air wake can be divided into four components according to their causes: the power spectra of the component of free random turbulence is simulated by means of shape filter; the steady component is acquired by linear interpolating; the periodic component is directly calculated; and the random turbulence induced by carrier is realized with SIMULINK Toolbox in MATLAB. The simulation shows that the periodic component is the dominant component of the air wake. The further validation of this model needs supports of more experimental data and data obtained aboard.
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Key words:
- aircraft carriers /
- carrier-based aircrafts /
- wakes /
- turbulence /
- power spectra
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