Eddy Resolving Simulations of Intake Under Crosswinds
Eddy Resolving Simulations of Intake Under Crosswinds
复制标题
侧风下进气的涡流解析模拟
DOI：
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发表时间：
2019
期刊：
影响因子：
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通讯作者：
P. Tucker
中科院分区：
文献类型：
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作者：
N. R. Vadlamani;P. Tucker
现代飞机发动机设计具有更高的涵道比和更低的风扇压力比，可提供高达25%的显著燃油燃烧效益。为了补偿阻力和重量的额外增加，采用了相对较短的进气道和短舱。然而，较短的进气道在高冲角和侧风的非设计条件下会受到影响。气流在进口唇口附近经历剧烈的加速、再层化、气流分离和向湍流的转变。采用涡解模拟，本文旨在捕捉侧风下的进气口唇口流动，并进一步探索雷诺数的影响。
Modern aircraft engine designs with higher bypass ratio and lower fan pressure ratio offer significant fuel burn benefits of upto 25%. To compensate for the additional increase in the drag and weight, relatively shorter intakes and nacelles are employed. However, shorter intakes suffer under off-design conditions of high incidence and crosswinds. The flow experiences severe acceleration around the intake lip, relaminarization, flow separation and transition to turbulence. Using eddy resolving simulations, the current paper aims to capture the flow over the intake lip under crosswinds and further explore effects of the Reynolds number.