Prediction of Acoustic Absorption Performance of a Perforated Plate with Air Jets

被引：2

作者：

Hamakawa, Hiromitsu ^{[1
]}

Miyazaki, Masanori ^{[2
]}

Asai, Yuta ^{[2
]}

Kurihara, Eru ^{[1
]}

Nishida, Eiichi ^{[3
]}

Hayashi, Hidechito ^{[4
]}

机构：

[1] Oita Univ, Dept Mech Engn, 700 Dannoharu, Oita 8701192, Japan

[2] Oita Univ, 700 Dannoharu, Oita 8701192, Japan

[3] Shonan Inst Technol, Dept Mech Syst Engn, 1-1-25 Tsujido Nishikaigan, Fujisawa, Kanagawa 2518511, Japan

[4] Nagasaki Univ, Dept Mech Engn, 1-14 Bunkyo Machi, Nagasaki 8528521, Japan

来源：

JOURNAL OF THERMAL SCIENCE | 2017年 / 26卷 / 04期

关键词：

acoustic absorption; perforated plate; theoretical prediction; acoustic impedance tube; air jets; BIAS-FLOW; SOUND; IMPEDANCE; APERTURE; CAVITY; NUMBER;

D O I：

10.1007/s11630-017-0952-5

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

The present study focuses on the prediction of acoustic absorption performance of a perforated plate with air jets by theoretical calculations. In addition, we experimentally measured the flow rate, internal pressure, acoustic pressure, and transfer function using an acoustic impedance tube. The normal incidence absorption coefficient was calculated from the measured transfer function using transfer function methods. We investigated the influences of background air space, flow velocity, thickness, aperture rate, and aperture diameter of a perforated plate on the acoustic absorption characteristics. The frequency characteristics of the acoustic absorption coefficient showed a maximum value at a local frequency. As the background air space increased, the peak frequency. of acoustic absorption characteristics decreased. As the flow velocity passing through the apertures increased, the peak level of the acoustic absorption coefficient also increased. The theoretical results agreed well with the experimental ones qualitatively.

引用

页码：378 / 384

页数：7

共 17 条

[1] SOUND-ABSORPTION BY A SCREEN WITH A REGULAR ARRAY OF SLITS [J].