Sound absorbing property of porous metal material under high temperature and high sound pressure by turbulence analogy
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Sound absorbing property of porous metal material under high temperature and high sound pressure by turbulence analogy
- 发表刊物：
- Journal of Applied Physics
- 摘要：
- A quantitative theoretical model is presented to investigate the sound absorbing property of porous metal materials with high temperature and high sound pressure based on Kolmogorov turbulence theory in this paper. The porous materials have a large number of anomalous pores with similar
scale, and these irregular pores could be considered as quasi-periodic structure that is very similar to the small-scale turbulence. Therefore, Kolmogorov turbulence theory is adopted to analyze the wave propagation inside the porous metal materials, in which the characteristic velocity and characteristic scale can be obtained by the nondimensional analysis method. Furthermore, the acoustical pressure
amplitude in the porous metal materials under high temperature and high sound pressure level can be figured out with respect to metal wire diameter, porosity, and other parameters. It is shown quantitatively that the acoustic pressure amplitude goes up with an increase in the temperature and/or the sound pressure level. This model is verified by the well agreement between the theoretical and experimental results. It could provide a reliable theoretical guidance for the applications of porous metal materials in the area of vibration and noise control under high temperature and high sound pressure level.
- 合写作者：
- Jiu Hui Wu, Zhiping Hu, Han Zhou
- 卷号：
- Vol.113, No.19
- 页面范围：
- 194905
- 是否译文：
- 否
- 发表时间：
- 2013-04-02