仪器网

欢迎您: 免费注册 仪器双拼网址:www.yiqi.com
首页-资讯-资料-产品-求购-招标-品牌-展会-行业应用-社区-供应商手机版
官方微信
中国仪器网• 行业应用
仪器网/ 行业应用/ 解决方案/ 基于时间分辨PIV的柱状翼型噪声的气动声学研究

基于时间分辨PIV的柱状翼型噪声的气动声学研究

点击这里给我发消息
内容节点
概述
实验/设备条件
样品提取
实验/操作方法
实验结果/结论
仪器/耗材清单
The rod-airfoil con痝uration is a benchmark test case for aeroacoustic assessments of vortex-
structure interaction noise. Several industrial devices are arranged in such a way that down-
stream bodies are embedded in the wake of upstream bodies, such as gas turbines, high lift
devices, helicopters among others. Aeroacoustic predictions usually rely on time dependent
皁w 痚ld information obtained from CFD for the determination of the aeroacoustic sources.
The present work proposes a novel approach for the aeroacoustic prediction of rod-airfoil noise
based on time-resolved PIV experimental data.
The aeroacoustic emission of a NACA0012 airfoil in the Karman wake of a rod is investigated
by means of 2D TR-PIV in combination with beamforming and microphone measurements.
First the time evolving velocity 痚ld around the airfoil is measured using high-speed PIV.
The corresponding pressure 痚ld is then deduced by spatial integration of a Poisson-based
algorithm for quasi-2D incompressible 皁ws. Pressure and velocity computed on speci痗
surfaces around the airfoil constitute the source terms of the implemented Curle's and Ffowcs
Williams-Hawkings's aeroacoustic analogies. The calculated Sound Pressure Level (SPL) is
compared with the measurements obtained by far 痚ld microphones. Velocity visualizations
in the spanwise direction provide qualitative information about the phase coherence of the
vortical impingement along the airfoil span. Parametric studies are performed to evaluate the
e甧ct on the acoustic prediction of the position of the integration surface and the numerical
discretization methods employed. 自适应粒子成像测速场仪(PIV) 德国LaVision PIV/PLIF粒子成像测速场仪 时间分辨粒子成像测速系统(TR-PIV)
相关产品
相关解决方案
热门解决方案
最新解决方案
在线留言
官方微信

仪器网微信服务号

扫码获取最新信息


仪器网官方订阅号

扫码获取最新信息

在线客服

咨询客服

在线客服
工作日:  9:00-18:00
联系客服 企业专属客服
电话客服:  400-822-6768
工作日:  9:00-18:00
订阅商机

仪采招微信公众号

采购信息一键获取海量商机轻松掌控