Acoustic wave propagation in one-dimensional phononic crystals containing Helmholtz resonators

2008 ◽  
Vol 103 (6) ◽  
pp. 064907 ◽  
Author(s):  
Zhi Guo Wang ◽  
Sam Hyeon Lee ◽  
Chul Koo Kim ◽  
Choon Mahn Park ◽  
Kyun Nahm ◽  
...  
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Phononic Crystals ◽  
Acoustic Wave Propagation ◽  
One Dimensional ◽  
Helmholtz Resonators

The role and application of entropy terms for acoustic wave modeling by the finite‐difference method

Geophysics ◽  
1984 ◽  
Vol 49 (9) ◽  
pp. 1457-1465 ◽  
Author(s):  
M. A. Dablain
Keyword(s):  
Wave Propagation ◽  
Finite Difference ◽  
Finite Difference Method ◽  
Acoustic Wave ◽  
Difference Scheme ◽  
Acoustic Wave Propagation ◽  
Central Difference ◽  
Central Difference Scheme ◽  
One Dimensional ◽  
The Finite Difference Method

The significance of entropy‐like terms is examined within the context of the finite‐difference modeling of acoustic wave propagation. The numerical implications of dissipative mechanisms are tested for performance within two very distinct differencing algorithms. The two schemes which are reviewed with and without dissipation are (1) the standard central‐difference scheme, and (2) the Lax‐Wendroff two‐step scheme. Numerical results are presented comparing the short‐wavelength response of these schemes. In order to achieve this response, the linearized version of an exploding one‐dimensional source is used.

Simulation of Noise Attenuation Using One and Two Degree of Freedom Helmholtz Resonators in Pipelines

2012 ◽  
Author(s):  
Maaz Farooqui ◽  
Samir Mekid
Keyword(s):  
Numerical Simulation ◽  
Wave Propagation ◽  
Acoustic Wave ◽  
Degrees Of Freedom ◽  
Design Procedure ◽  
Experimental Results ◽  
Noise Attenuation ◽  
Acoustic Wave Propagation ◽  
Helmholtz Resonators ◽  
Two Degree Of Freedom

Helmholtz resonators are known to be efficient resonators for ducts if they are properly designed. A design procedure is suggested in this paper to identify the size of the resonators in one and two degrees of freedom. The procedure is supported by a through numerical simulation of acoustic wave propagation that is presented and is verified using published experimental results. The overall procedure shows achievable great attenuation of noise in pipeline.

scholarly journals Time-stepping beyond CFL: A locally one-dimensional scheme for acoustic wave propagation

2013 ◽  
Author(s):  
Leonardo Zepeda Nunez ◽  
Russell J. Hewett ◽  
Laurent Demanet ◽  
Minghua Michel Rao
Keyword(s):  
Wave Propagation ◽  
Acoustic Wave ◽  
Acoustic Wave Propagation ◽  
One Dimensional ◽  
Time Stepping
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