导流片设置对风管系统的消声预测模拟研究  

Simulation Study on Noise Reduction Prediction in Air Duct Systems with Guide Vanes

作　　者：沈慧华 SHEN Huihua(Shanghai Installation Engineering Group Co.,Ltd.,Shanghai 200080,China)

机构地区：[1]上海市安装工程集团有限公司,上海200080

出　　处：《建筑施工》2024年第11期1796-1799,共4页Building Construction

基　　金：上海市安装工程集团有限公司年度科研计划(AZ2023-30)。

摘　　要：空调的噪声超标一直以来是剧场、歌剧院等建筑受到投诉率最高的问题之一。针对通风系统气动噪声,大多考虑风机噪声的影响,但建筑空调风管系统在声学性能上也存在很大的缺陷,其中风管系统中导流片的设置是影响空调噪声的根本环节。因此,以上海某歌剧院风管弯头是否设置导流片为例,对缩尺风管进行仿真,并结合试验,检验预测模拟结果的可靠性,以发现其对消声和系统阻力的影响,可为后续是否可以采用仿真法代替试验法研究风管内导流片的降噪效果提供理论依据。Excessive noise from air conditioning systems has been a frequent source of complaints in theatres,opera houses,and similar buildings.While the aerodynamic noise in ventilation systems is often attributed to fan noise,significant deficiencies also exist in the acoustic performance of building air conditioning duct systems.The placement of guide vanes in duct systems is a critical factor influencing air conditioning noise.To explore this,a simulation is conducted on a scaled air duct,focusing on whether guide vanes are installed in the duct elbows of an opera house in Shanghai.The reliability of the simulated results is validated through experiments,examining their impact on noise reduction and system resistance.This provides a theoretical foundation for using simulation methods instead of experimental methods to study the noise reduction effects of guide vanes in air ducts.

关 键 词：歌剧院 空调噪声 风管弯头 导流片 仿真法 试验法 

分 类 号：TU242.6[建筑科学—建筑设计及理论]