Numerical study on interference effects of the nacelle position on aerodynamic characteristics and nacelle intake performances

Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering Pub Date : 2023-11-26 DOI:10.1177/09544100231218747

Yihua Cao, Yihao Qin, Maosheng Wang

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Abstract

Insight into the interference effects of the nacelle position can be used to provide some guidance for achieving better aircraft performance in the preliminary design of modern civil aircraft. This paper investigates the through-flow nacelle position effects on aircraft aerodynamic characteristics and nacelle intake performances through numerical simulation. The Common Research Model with different nacelle-pylon installation positions is analyzed and all the five nacelle installation parameters, including spanwise position, penetration, gully depth, pitch angle, and toe angle, are systematically studied. Qualitative and quantitative comparisons between different configurations are conducted and the sensitivity of drag, lift distribution, total pressure recovery, and airflow distortion to nacelle position is obtained. The mechanism of interference effects is also explored. These derived insights can provide some guidance for determining the nacelle position and reduce the cost of subsequent wind tunnel test.

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关于短舱位置对气动特性和短舱进气性能的干扰效应的数值研究

在现代民用飞机的初步设计中，洞察短舱位置的干扰效应可以为实现更好的飞机性能提供一些指导。本文通过数值模拟研究了通流短舱位置对飞机气动特性和短舱进气性能的影响。分析了不同短舱-塔架安装位置的通用研究模型，并系统地研究了短舱安装的所有五个参数，包括跨距位置、贯通度、沟槽深度、俯仰角和趾角。对不同配置进行了定性和定量比较，得出了阻力、升力分布、总压恢复和气流扭曲对短舱位置的敏感性。此外，还探讨了干扰效应的机理。这些结论可为确定短舱位置提供一些指导，并降低后续风洞试验的成本。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Proceedings of the Institution of Mechanical Engineers, Part G: Journal of Aerospace Engineering

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