Sound Propagation in Cylindrical Tubes and Porous Materials Having Cylindrical Pores

2009 ◽  
pp. 45-72 ◽  
Keyword(s):  
Porous Materials ◽  
Sound Propagation ◽  
Cylindrical Pores ◽  
Cylindrical Tubes

Sound propagation in porous materials containing rough tubes

2020 ◽  
Vol 32 (9) ◽  
pp. 093604 ◽  
Author(s):  
Zhimin Xu ◽  
Wei He ◽  
Fengxian Xin ◽  
Tian Jian Lu
Keyword(s):  
Porous Materials ◽  
Sound Propagation

POROUS MATERIALS FOR SCALE MODEL EXPERIMENTS IN OUTDOOR SOUND PROPAGATION

1996 ◽  
Vol 194 (5) ◽  
pp. 685-708 ◽  
Author(s):  
K.V. Horoshenkov ◽  
D.C. Hothersall ◽  
K. Attenborough
Keyword(s):  
Porous Materials ◽  
Sound Propagation ◽  
Scale Model ◽  
Model Experiments

Two Different Approaches for the Effective Conductivity Investigation of 2D Porous Materials with Temperature Dependent Material Properties

2007 ◽  
Vol 553 ◽  
pp. 118-123
Author(s):  
Ekaterina Pesetskaya ◽  
Thomas Fiedler ◽  
Andreas Öchsner
Keyword(s):  
Porous Materials ◽  
Analytical Method ◽  
Complex Analysis ◽  
Nonlinear Boundary ◽  
Effective Conductivity ◽  
The Finite Element Method ◽  
Temperature Dependent ◽  
Representative Cell ◽  
Cylindrical Pores ◽  
Matrix Properties

The effective conductivity of 2D porous materials with temperature dependent matrix properties is investigated by two different approaches: namely, a numerical and an analytical method. A model with disjoint parallel cylindrical pores in a representative cell is considered. The numerical method is represented by the finite element method. In the scope of the analytical method, the nonlinear boundary value problem which describes conducting properties of the materials is solved by the methods of complex analysis, and the effective conductivity is represented in an explicit form via the solution of this problem. The values of the effective conductivity obtained by two these methods are compared.

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