船舶空调通风管路系统的噪声作为舱室内的主要噪声源，一直以来都受到广泛关注。本文根据声源、管路元件以及目标舱室的顺序依次分析计算，提出一种船舶空调通风管路系统的噪声经验预报方法。该方法把管路中各元件产生的气流再生噪声和噪声衰减量按经验公式分别求解，然后按照元件在管路中的布置顺序，得到管路末端声功率级，最后在目标舱室结合统计房间声学计算得到总声压级。该方法的特点是可以在设计初期对目标舱室内空调通风管路系统产生的噪声进行快速预报，无需管路元件的详细参数以及复杂的建模过程。通过计算某型集装箱船的典型房间内噪声声压级，验证了该方法的工程实用价值。
HVAC noise as the main noise source for ship cabin has been attracting widespread attention. HVAC noise prediction is advanced according to the analysis and calculation in order of noise source, duct components and target cabin. Flow noise and sound attenuation in HVAC duct systems are calculated respectively according to empirical formula. Then, sound power levels in duct terminal are calculated according to subsequence of components. Finally, total sound pressure levels in target cabin are combined logarithmically with statistical room acoustics. The noise prediction for this method can be used in initial design stage without specific details and complicated modeling of the duct components. The typical HVAC noise pressure levels of a container vessel are computed, which validate the engineering practicability of this method.
2023,45(23): 56-61 收稿日期：2022-11-04
DOI：10.3404/j.issn.1672-7649.2023.23.010
分类号：U661.44
作者简介：许斐(1985-),男,硕士,高级工程师,研究方向为船舶振动噪声
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