H2020 ENODISE: ONERA Numerical Aeroacoustic Database Configuration B1

The ONERA numerical database on configuration B1 deals with the scattering effects of 3 side-by-side puller propellers installed upstream a wing profile in a flow, using an in-house 3-steps-chaining-method. The aim of this work has been to evaluate the ability of the method to predict the scattering effects on the sound pressure level and its directivity. <br> The two operating points that have been studied are:<br> • U∞ = 30 m/s, J = 0.8, AoA = 2°, with a blade phase-angle Φ=0° between the middle and the side propellers<br> • U∞ = 30 m/s, J = 0.8, AoA = 2°, with a blade phase-angle Φ=10° between the middle and the side propellers The present configuration follows the one described in TUD experimental contribution for configuration B1. A synthetized description of the numerical method including some important details and results will be included in the file ONERA_B1_configuration.pptx. The ONERA database contains numerical results about aerodynamic performances (thrust, torque and efficiency). It also includes pressure and sound pressure levels on the arcs microphones positions of TUD experimental configuration.<br> Data are stored in .dat and .plt format files.

ONERA针对B1构型的数值数据库，聚焦于流场中翼型上游并排布置的三台牵引式螺旋桨的散射效应，采用自研三步链式方法开展相关研究。本研究旨在评估该方法对声压级及其指向性的散射效应的预测能力。
本次研究的两个运行工况如下：
• 来流速度U∞=30 m/s，前进比J=0.8，攻角AoA=2°，中间螺旋桨与侧置螺旋桨的桨叶相位角Φ=0°
• 来流速度U∞=30 m/s，前进比J=0.8，攻角AoA=2°，中间螺旋桨与侧置螺旋桨的桨叶相位角Φ=10°
本构型参考了TUD针对B1构型的实验研究内容。包含该数值方法的综合说明（含部分关键细节与研究结果）的文件为ONERA_B1_configuration.pptx。
本ONERA数据库收录了螺旋桨气动性能（推力、扭矩与效率）的数值结果，同时还包含TUD实验构型中弧形麦克风测点处的压力与声压级数据。
所有数据以.dat和.plt格式文件存储。