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Validation of the sonAIR Aircraft Noise Simulation Model - a Case Study for Schiphol Airport

机译:sonAIR飞机噪声仿真模型的验证-以史基浦机场为例

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sonAIR is a recently developed aircraft noise simulation model. Its emission database has been derived from measurements of real air traffic at Zurich airport. Within the scope of validation, a systematic comparison of calculations with measurements from different data sources and airports is currently being carried out. In this paper, a specific case study of this validation process is presented. The study is based on measurements of 74 flights by 14 different turbofan powered aircraft during final approach at Schiphol Airport in Amsterdam, the Netherlands. The measurements were conducted by Delft University of Technology within the scope of developing an acoustic camera. Since the microphones were placed on a sound-absorbing supporting structure very close to the ground, a detailed modeling of the set-up was needed to account for the reflector area and surface properties. Despite this challenge, a comparison of simulation and measurements revealed a good agreement in sound exposure levels. The mean difference in L_(AE,T10) between measurements and calculations amounted to -0.4 dB with a standard deviation of 1.1 dB. These results confirm the capability of sonAIR to accurately simulate single flights and demonstrate the applicability of the model to different airports.
机译:sonAIR是最近开发的飞机噪声仿真模型。它的排放数据库是从苏黎世机场实际空中交通流量的测量得出的。在确认范围内,目前正在对计算与来自不同数据源和机场的测量值进行系统的比较。在本文中,将介绍此验证过程的特定案例研究。这项研究基于在荷兰阿姆斯特丹史基浦机场的最后进近期间,由14架不同的涡扇发动机驱动的飞机进行的74次飞行的测量。这些测量是由代尔夫特理工大学在开发声学相机的范围内进行的。由于麦克风被放置在非常靠近地面的吸声支撑结构上,因此需要对设置进行详细的建模,以考虑反射器的面积和表面特性。尽管存在这一挑战,但通过模拟和测量的比较,可以得出声音暴露水平的良好一致性。测量和计算之间的L_(AE,T10)平均差为-0.4 dB,标准偏差为1.1 dB。这些结果证实了sonAIR能够准确模拟单个航班的能力,并证明了该模型在不同机场的适用性。

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