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Theoretical modeling of the excess noise due to jet-wing interaction

机译：喷气翼相互作用产生的过量噪声的理论模型

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Theoretical approach to the jet-wing interaction noise is considered. Physical modelling of the jet-wing interaction noise consists mainly of two problem: the problem of the diffraction of the jet near field pulsations on the wing trailing edge, and the problem of the modelling of the jet near field itself. The current paper is focused on the development of the analytical method for jet-wing interaction description including flight effect. A model problem of jet-wing interaction is formulated in terms of scattering of the given perturbation field on the half-plane and solved by means of the Wiener-Hopf technique and 2D steepest descent method. The obtained solution is verified by means of the tailored Green's function (in static conditions) and UTD approach (in static and flight conditions). Experimental data on jet-plate interaction noise are obtained for small-scale round jet. Preliminary modeling of the experimental data is performed by means of the Wiener-Hopf solution and simple Gaussian-type wave packets simulating low-frequency near field pulsations.
机译：考虑了喷气机-飞机相互作用噪声的理论方法。喷气-机翼相互作用噪声的物理建模主要包括两个问题：机翼后缘上喷气近场脉动的衍射问题，以及喷气近场本身的建模问题。目前的论文集中在喷气机相互作用描述分析方法的发展，包括飞行效应。根据给定的扰动场在半平面上的散射来公式化喷气机-机翼相互作用的模型问题，并通过维纳-霍普夫（Wiener-Hopf）技术和二维最速下降法进行求解。通过定制的格林函数（在静态条件下）和UTD方法（在静态和飞行条件下）验证所获得的解决方案。获得了小型圆形射流的射流板相互作用噪声的实验数据。实验数据的初步建模是通过Wiener-Hopf解决方案和模拟低频近场脉动的简单高斯型波包进行的。

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