scholarly journals Study of Gas Flow Characteristics in Tight Porous Media with a Microscale Lattice Boltzmann Model

2016 ◽  
Vol 6 (1) ◽  
Author(s):  
Jianlin Zhao ◽  
Jun Yao ◽  
Min Zhang ◽  
Lei Zhang ◽  
Yongfei Yang ◽  
...  
Keyword(s):  
Porous Media ◽  
Lattice Boltzmann ◽  
Gas Flow ◽  
Flow Characteristics ◽  
Lattice Boltzmann Model ◽  
Tight Porous Media ◽  
Boltzmann Model

scholarly journals Lattice Boltzmann Model for Gas Flow through Tight Porous Media with Multiple Mechanisms

Entropy ◽  
2019 ◽  
Vol 21 (2) ◽  
pp. 133 ◽  
Author(s):  
Junjie Ren ◽  
Qiao Zheng ◽  
Ping Guo ◽  
Chunlan Zhao
Keyword(s):  
Porous Medium ◽  
Porous Media ◽  
Lattice Boltzmann ◽  
Gas Flow ◽  
Stress Sensitivity ◽  
Lattice Boltzmann Model ◽  
Flow Through Porous Media ◽  
Gas Slippage ◽  
Flow Through ◽  
Boltzmann Model

In the development of tight gas reservoirs, gas flow through porous media usually takes place deep underground with multiple mechanisms, including gas slippage and stress sensitivity of permeability and porosity. However, little work has been done to simultaneously incorporate these mechanisms in the lattice Boltzmann model for simulating gas flow through porous media. This paper presents a lattice Boltzmann model for gas flow through porous media with a consideration of these effects. The apparent permeability and porosity are calculated based on the intrinsic permeability, intrinsic porosity, permeability modulus, porosity sensitivity exponent, and pressure. Gas flow in a two-dimensional channel filled with a homogeneous porous medium is simulated to validate the present model. Simulation results reveal that gas slippage can enhance the flow rate in tight porous media, while stress sensitivity of permeability and porosity reduces the flow rate. The simulation results of gas flow in a porous medium with different mineral components show that the gas slippage and stress sensitivity of permeability and porosity not only affect the global velocity magnitude, but also have an effect on the flow field. In addition, gas flow in a porous medium with fractures is also investigated. It is found that the fractures along the pressure-gradient direction significantly enhance the total flow rate, while the fractures perpendicular to the pressure-gradient direction have little effect on the global permeability of the porous medium. For the porous medium without fractures, the gas-slippage effect is a major influence factor on the global permeability, especially under low pressure; for the porous medium with fractures, the stress-sensitivity effect plays a more important role in gas flow.

Study for Modification Lattice Boltzmann Model Application to Flow Characteristics for Gas Hydrate Decomposition in Sediment

2012 ◽  
Author(s):  
Xichong Yu ◽  
Yu Liu ◽  
Weixin Pang ◽  
Yuhu Bai ◽  
Jiafei Zhao
Keyword(s):  
Porous Media ◽  
Gas Hydrate ◽  
Lattice Boltzmann ◽  
Single Phase ◽  
Flow Characteristics ◽  
Lattice Boltzmann Model ◽  
Flow In Porous Media ◽  
Micro Channel ◽  
Hydrate Decomposition ◽  
Boltzmann Model

In this paper, based on sediment with gas hydrate and flow characteristics for gas hydrate decomposition, the interaction and density difference between the phases are considered, conventional lattice Boltzmann model is modified to new lattice Boltzmann model then is applied to study flow characteristics for gas hydrate decomposition in sediment. The method is the mesoscopic model between macro and micro methods between. Modification lattice Boltzmann model is applied to carry out a complex micro-channel single-phase, multiphase flow simulation analysis, single-phase flow in porous media for gas hydrate decomposition. The results show that complex micro-channel flow field depends on the micro-channel roughness, bending degree, surface wet ability, fluid properties and other media. Single-phase flow in porous media depends on the pore diameter (saturation) and permeability of the sediment and the hydrate formation in the sediment so greatly reduces the permeability of porous media.

scholarly journals Generalized lattice Boltzmann model for flow through tight porous media with Klinkenberg's effect

2015 ◽  
Vol 91 (3) ◽  
Author(s):  
Li Chen ◽  
Wenzhen Fang ◽  
Qinjun Kang ◽  
Jeffrey De’Haven Hyman ◽  
Hari S. Viswanathan ◽  
...  
Keyword(s):  
Porous Media ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Flow Through ◽  
Tight Porous Media ◽  
Boltzmann Model ◽  
Klinkenberg’S Effect

Cascaded collision lattice Boltzmann model (CLBM) for simulating fluid and heat transport in porous media

2017 ◽  
Vol 72 (3) ◽  
pp. 211-232 ◽  
Author(s):  
Nimit Shah ◽  
Purbarun Dhar ◽  
Sampath Kumar Chinige ◽  
Martin Geier ◽  
Arvind Pattamatta
Keyword(s):  
Porous Media ◽  
Heat Transport ◽  
Lattice Boltzmann ◽  
Lattice Boltzmann Model ◽  
Transport In Porous Media ◽  
Boltzmann Model
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