1·The applicability of the Helmholtz resonator model in the study of the PER walls' pressure equalization was analyzed.
基于相关控制方程研究了等压雨幕墙风洞试验缩尺建模的相似准则。
2·The effect of installing the Helmholtz resonator in CA488 engine air intake manifold on engine performances is also analyzed in this paper.
并分析了在CA488进气管中装入亥姆赫兹谐振器对发动机性能的影响。
3·Based on the sound absorption mechanism of Helmholtz Resonator, the advantage of soft tube length is fully used in the new structure, and thus the low-frequency noise can be controled easily.
提出了一种新型的宽频带共振吸声结构，该结构基于赫姆霍兹共振吸声机理，并充分利用了软管在长度上的优势，易于实现对低频噪声的控制。
4·The mechanism for low noise asphalt pavement to lower tyre noise is analyzed. A acoustical model is put forward. The resonance frequency of sound wave is analyzed with Helmholtz resonator model.
分析了低噪声沥青混凝土路面降低轮胎噪声的机理，建立低噪声沥青混凝土路面的声学模型，用亥姆霍兹共振器模型分析计算了声波的共振频率。