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首页> 外文期刊>The Aeronautical Journal >Progress toward CFD for full flight envelope
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Progress toward CFD for full flight envelope

机译：向CFD迈进的全程飞行包线

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The value of computational fluid dynamics, CFD, delivered to date has mainly been related to its application to high-speed cruise design. To increase its applicability CFD must apply to the full flight envelope frequently characterised by large regions of separated flows. These flows are encountered by transport aircraft at low speed with deployed high lift devices, at their structural design loads conditions, or subjected to in-flight upsets that expose them to speed and/or angle-of-attack conditions outside the envelope of normal flight conditions to name a few. Such flows can only be characterised by the Navier-Stokes equations. This paper will report the progress toward CFD for full flight envelope. The CFD methods in use at Boeing will be described. Examples presented will address high-lift, loads and stability and control concerns including Reynolds scaling from wind tunnel to flight, vortex generator simulation, spoiler and horizontal tail effectiveness. In general, results shown are in 'good enough' agreement with experimental data. Deficiencies and the need for further algorithm and process improvement are noted. The need for automation to enable the large scale use of CFD will also be discussed.
机译：迄今为止，计算流体动力学CFD的价值主要与它在高速巡航设计中的应用有关。为了提高其适用性，CFD必须适用于通常以大面积的分离流动为特征的完整飞行包线。这些气流在运输飞机的低速飞行中遇到，它们在结构设计载荷条件下使用已部署的高升力装置，或者在飞行中发生翻倒，使它们处于正常飞行范围之外的速度和/或攻角条件下列举几个条件。这种流动只能通过Navier-Stokes方程来表征。本文将报告CFD的完整飞行包线进展。将描述波音公司正在使用的CFD方法。提出的示例将解决高升力，载荷，稳定性和控制方面的问题，包括雷诺兹从风洞到飞行的缩放，涡流发生器模拟，扰流器和水平尾翼的有效性。通常，显示的结果与实验数据“足够好”一致。指出了缺陷以及对进一步算法和过程改进的需求。也将讨论实现大规模使用CFD的自动化需求。

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