Selamet Ahmet, Kim Hyunsu, Huff Norman T
Department of Mechanical Engineering and The Center for Automotive Research, The Ohio State University, Columbus, OH 43212, USA.
J Acoust Soc Am. 2009 Sep;126(3):1142-50. doi: 10.1121/1.3183416.
The effect of leakage in Helmholtz resonators has been investigated in this predominantly experimental study combined with a computational effort. A prototype has been built with varying levels of intentional leakage due to holes in the baffle and gaps between the baffle and the housing. The transmission loss is then measured with different combinations of holes and/or gaps. Such openings, even though their cross-sectional areas are small, are found to have a significant impact on transmission loss. The effect of holes versus gaps is also compared as a function of the leakage area. The present study illustrates the critical need to account for such leakages at the design stage for the proper tuning of these resonators.
在这项以实验为主并结合计算工作的研究中，对亥姆霍兹共鸣器中的泄漏效应进行了研究。制作了一个原型，由于挡板上的孔以及挡板与外壳之间的间隙，使其具有不同程度的故意泄漏。然后测量不同孔和/或间隙组合下的传输损耗。发现此类开口尽管其横截面积很小，但对传输损耗有显著影响。还比较了孔与间隙的效应作为泄漏面积的函数。本研究表明在设计阶段考虑此类泄漏对于正确调谐这些共鸣器至关重要。
