Turbulence grids replicating the velocity profile (including the high-frequency part of the turbulence spectrum) of the atmospheric boundary layer (ABL) have been designed, manufactured, and tested in ONERA wind tunnels. These ABL grids are intended to improve the experimental simulation of the flow entering air inlets of aircraft engines while operating in a crosswind. It was found that the grids properly reproduced the features of the ABL flow that are relevant to this application. A test with an air inlet has confirmed that the grids can have a noticeable effect on the operating range of the air inlet and are therefore of significant interest to engine manufacturers.

复制了大气边界层（ABL）的速度分布图（包括湍流频谱的高频部分）的湍流栅格已经在ONERA风洞中进行了设计，制造和测试。这些ABL栅格旨在改进在侧风运行时进入飞机发动机进气口的气流的实验模拟。发现网格正确地再现了与该应用有关的ABL流的特征。使用进气口进行的测试已确认，格栅可以对进气口的工作范围产生显着影响，因此对于发动机制造商来说非常重要。