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首页> 外文期刊>Journal of the American Helicopter Society >A Viscous Vortex Particle Model for Rotor Wake and Interference Analysis
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A Viscous Vortex Particle Model for Rotor Wake and Interference Analysis

机译：转子尾流的粘性涡粒子模型及干扰分析。

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This paper presents a viscous vortex particle model that was developed to address the challenging rotor wake and interference problems. The viscous vortex particle modeling technology can accurately solve the complicated rotor wake variation and is well suited for aerodynamic interaction simulation in complex environments. The current model directly solves the velocity-vorticity form of the incompressible Navier-Stokes equation using a grid-free Lagrangian simulation, which overcomes the hurdle of artificial numerical dissipation inherent in most current grid-based Navier-Stokes CFD methods and provides a successful solution to the rotor vorticity transportation and interaction. This paper discusses the fundamental formulation, the numerical algorithms, and the simulation results. The rotor wake geometry and downwash were investigated for different rotor configurations operating in hover, forward flight, in ground effect, and in a shipboard environment, including comparisons with the available measured data. Excellent agreement was obtained. The model was also used to trim a full UH-60 rotorcraft in level flight, and encouraging results were obtained.
机译：本文提出了一种粘性涡旋颗粒模型，该模型旨在解决具有挑战性的转子尾流和干扰问题。粘性涡旋颗粒建模技术可以准确解决复杂的转子尾流变化，非常适合复杂环境中的空气动力相互作用仿真。当前模型使用无网格拉格朗日模拟直接求解不可压缩的Navier-Stokes方程的速度涡度形式，这克服了当前大多数基于网格的Navier-Stokes CFD方法固有的人工数值耗散障碍，并提供了成功的解决方案转子旋涡的运输和相互作用。本文讨论了基本公式，数值算法和仿真结果。研究了在悬停，前飞，地面效应和舰船环境中操作的不同转子配置的转子尾流几何形状和下冲，包括与可用测量数据的比较。获得了极好的协议。该模型还用于在水平飞行中修剪整架UH-60旋翼飞机，并获得了令人鼓舞的结果。

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