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首页> 外文期刊>The Aeronautical Journal >Simulation study of wake encounters with straight and deformed vortices
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Simulation study of wake encounters with straight and deformed vortices

机译：直涡和变形涡的尾流相遇的仿真研究

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A simulation study was conducted in order to investigate the influence of vortex deformation on wake encounter characteristics. Wake vortices tend to be strongly deformed during the decay process, depending on the atmospheric conditions in terms of turbulence and thermal stratification. For quantification of the influence of vortex deformation, encounters of an aircraft of the 'Medium' category behind a generator aircraft of the 'Heavy' category were simulated with straight vortices and with realistically deformed vortices derived from large eddy simulations. All relevant parameters that influence the encounter characteristics, such as encounter angles and positions, were varied within a wide range. In order to cover all kinds of vortex deformation, encounters with different vortex ages from 16-136 seconds were simulated. Hence, all relevant phases during the vortex decay from nearly straight and wavy vortices to vortex rings were considered.
机译：为了研究涡流变形对尾流遭遇特性的影响，进行了模拟研究。在湍流和热分层方面，取决于大气条件，苏醒涡流在衰减过程中趋于强烈变形。为了量化旋涡变形的影响，模拟了“重型”类别的发电机飞机后面的“中等”类别的飞机，它们是通过直线旋涡和通过大涡流模拟得出的实际变形的旋涡来模拟的。影响相遇特征的所有相关参数（例如相遇角度和位置）都在很宽的范围内变化。为了涵盖各种涡旋变形，模拟了16-136秒内不同涡旋年龄的相遇。因此，考虑了在涡旋衰减期间从几乎笔直和波浪状的涡旋到涡旋环的所有相关相位。

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