Please use this identifier to cite or link to this item:
https://hdl.handle.net/2440/112868
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Type: | Journal article |
Title: | Molecular dynamics simulation of classical sound absorption in a monatomic gas |
Author: | Ayub, M. Zander, A.C. Huang, D.M. Cazzolato, B.S. Howard, C.Q. |
Citation: | Journal of Sound and Vibration, 2018; 421:319-333 |
Publisher: | Elsevier |
Issue Date: | 2018 |
ISSN: | 0022-460X 1095-8568 |
Statement of Responsibility: | M. Ayub, A.C. Zander, D.M. Huang, B.S. Cazzolato, C.Q. Howard |
Abstract: | Sound wave propagation in argon gas is simulated usingmolecular dynamics (MD) in order to determine the attenuation of acoustic energy due to classical (viscous and thermal) losses at high frequencies. In addition, amethod is described to estimate attenuation of acoustic energy using the thermodynamic concept of exergy. The results are compared against standing wave theory and the predictions of the theory of continuum mechanics. Acoustic energy losses are studied by evaluating various attenuation parameters and by comparing the changes in behavior at three different frequencies. This study demonstrates acoustic absorption effects in a gas simulated in a thermostatted molecular simulation and quantifies the classical losses in terms of the sound attenuation constant. The approach can be extended to further understanding of acoustic loss mechanisms in the presence of nanoscale porous materials in the simulation domain. |
Keywords: | Molecular dynamics; classical sound absorption; viscous and thermal losses; sound attenuation; themoacoustic exergy concepts |
Rights: | © 2018 Elsevier Ltd. All rights reserved |
DOI: | 10.1016/j.jsv.2018.02.003 |
Grant ID: | http://purl.org/au-research/grants/arc/DP130102832 |
Published version: | http://dx.doi.org/10.1016/j.jsv.2018.02.003 |
Appears in Collections: | Aurora harvest 8 Mechanical Engineering publications |
Files in This Item:
File | Description | Size | Format | |
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hdl_112868.pdf | Submitted version | 958.02 kB | Adobe PDF | View/Open |
hdl_112868.pdf | Accepted version | 1.08 MB | Adobe PDF | View/Open |
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