Numerical Modeling of Gas Flow in Coal Using a Modified Dual-Porosity Model: A Multi-Mechanistic Approach and Finite Difference Method

2018 ◽  
Vol 51 (9) ◽  
pp. 2863-2880 ◽  
Author(s):  
Peng Liu ◽  
Yueping Qin ◽  
Shimin Liu ◽  
Yongjiang Hao
Keyword(s):  
Numerical Modeling ◽  
Finite Difference ◽  
Finite Difference Method ◽  
Difference Method ◽  
Gas Flow ◽  
Dual Porosity ◽  
Mechanistic Approach ◽  
Dual Porosity Model ◽  
Porosity Model

Numerical Modeling of Wave Propagation in Poroelastic Media with a Staggered-Grid Finite-Difference Method

2013 ◽  
Vol 275-277 ◽  
pp. 612-617
Author(s):  
Wen Sheng Zhang ◽  
Li Tong
Keyword(s):  
Numerical Modeling ◽  
Wave Propagation ◽  
Finite Difference ◽  
Finite Difference Method ◽  
Difference Method ◽  
Staggered Grid ◽  
Poroelastic Medium ◽  
Numerical Computations ◽  
Poroelastic Media ◽  
Biot’S Equations

In this paper, wave propagation in poroelastic medium is simulated with a staggered-grid finite-difference method. The formulation is discretized based on the second-order Biot’s equations rather than the corresponding velocity-stress form. In order to eliminate boundary reflections, the PML method is applied. Numerical computations are implemented and the results show the correctness and effectiveness of the schemes presented in this paper.

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