抛物线方程方法的模型间比较,用于从风力轮机发出的声音传播
Camilla Marie Nyborg1, Karl Bolin2, Ilkka Karasalo2
1Technical University of Denmark-DTU Wind Energy, Frederiksborgvej 399, 4000 Roskilde, Denmark.
The Journal of the Acoustical Society of America
|August 31, 2023
概括
这项研究使用两个抛物线方程模型模拟风力轮机噪声传播,分析地形和风力效应. 这些模型与现实世界的噪音测量得到了验证.
科学领域:
- 声学 声学 在声学上
- 环境工程 环境工程
- 计算物理 计算物理
背景情况:
- 风力轮机噪声传播的建模是复杂的,因为风速,方向,地形和地面阻抗等因素.
- 声波折射,反射和阴影区域显著影响接收器位置的噪声水平.
- 现有的声音传播模型在真实性和复杂性上有所不同.
研究的目的:
- 理论上研究贝利斯-塔珀特抛物线方程和通用地形抛物线方程,用于风力轮机噪声建模.
- 为了研究不同地形复杂度,地面阻抗和声速形状对声音传播的影响.
- 通过实验性噪声测量来验证所选择的抛物线方程模型.
主要方法:
- 两个抛物线方程模型的理论分析:贝利斯-塔珀特和一般化地形.
- 模拟不同条件下的声音传播:不同的地形,地面阻抗和风形状 (上风,下风,没有风).
- 通过对来自扬声器和风力轮机测量活动的噪声数据进行光谱比较来验证模型预测.
主要成果:
- 抛物线方程模型展示了对地形复杂性,地面阻抗和风条件的不同灵敏度.
- 在不同的环境场景中评估了模型在预测噪音水平和阴影区域方面的性能.
- 频谱比较显示,模型预测和测量噪声数据之间有很好的一致性,证实了模型的有效性.
结论:
- 贝利斯-塔珀特和一般化地形抛物线方程模型为预测风力轮机噪声传播提供了有价值的工具.
- 了解环境因素的影响对于准确的噪音评估和缓解策略至关重要.
- 经过验证的模型可以帮助优化风电场的设计,并尽量减少环境噪音的影响.
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