空气动力学学报2024，Vol.42Issue(6)：15-34,20.DOI:10.7638/kqdlxxb-2023.0111
基于线阵列的湍流边界层壁面脉动压力波数-频率谱模型实验研究
Experimental study of the turbulent-boundary-layer wall pressure fluctuation wavenumber-frequency spectrum models using linear array
摘要
Abstract
Wavenumber-frequency spectrum modeling of wall pressure fluctuation has been the focus of the flow-induced noise in turbulent boundary layers.This study first summarized 11 models in the last six decades,classified into four groups,i.e.,Corcos-type,incompressible,compressible,and others.The performance of these models,further classified into Corocos-type and non-Corcos-type,was then examined by comparing their prediction with the experimental measurement using a linear array in an aeroacoustic wind tunnel.Results show that the linear array can measure the streamwise wavenumber-frequency spectrum correctly and,therefore,can be used to evaluate the accuracy of prediction models.The Corcos-type models have to be chosen based on the interested frequencies,wavenumbers,and the formula's complexity.The non-Corcos-type models can directly predict the wavenumber-frequency spectrum without the self-spectrum input,an advantage over the Corcos-type.Specifically,Chase-I model has the best ovserall performance;Chase-II can predict the acoustic-affected area.关键词
湍流边界层/脉动压力/波数-频率谱/声学风洞/线阵列Key words
turbulent boundary layer/pressure fluctuation/wavenumber-frequency spectrum/aeroacoustic wind tunnel/linear array引用本文复制引用
赵鲲,章荣平,杨玫,王勋年,余荣科..基于线阵列的湍流边界层壁面脉动压力波数-频率谱模型实验研究[J].空气动力学学报,2024,42(6):15-34,20.基金项目
青年人才托举项目(2020-xxxx-QT-xxx) （2020-xxxx-QT-xxx）
基础加强项目(2022-xxxxx-128) （2022-xxxxx-128）
