CAJ | 학술논문

建立管壁子系统模拟振动在通风管壁上的传播，空腔子系统模拟风机噪声的传播，采用统计能量法对空调通风系统中风机产生的噪声及振动沿管壁的传播进行计算。对由于管路内气流的流动在异径、三通和弯头产生的气流噪声，采用有限元法进行模拟。利用 CFD 软件模拟管路内气流产生的流场，利用声类比理论对流场压力进行提取，得到管路气流噪声。
건립관벽자계통모의진동재통풍관벽상적전파，공강자계통모의풍궤조성적전파，채용통계능량법대공조통풍계통중풍궤산생적조성급진동연관벽적전파진행계산。대유우관로내기류적류동재이경、삼통화만두산생적기류조성，채용유한원법진행모의。이용 CFD 연건모의관로내기유산생적류장，이용성류비이론대류장압력진행제취，득도관로기류조성。
Tube well subsystem and cavity subsystem are built to model the transmission of vibration on the ventilation tube well and fan noise. Statistical energy analysis method is used to calculate transmission down the tube well of fan vibration and noise in the air-conditioning system. FEM is used to model airflow noise result from pipeline airflow on the node of reduc-ers ,tee,and elbow. Using CFD to model the fluid field of airflow in the pipeline, utilizing acoustic analogy theory to extract fluid field pressure and get pipeline airflow noise.