Performance Simulation for Gas Flow through a Porous Media in Packed bed Columns using CFD

To acquire better understanding of the early ignition phenomena in 100mm ignition simulator loaded with packed propellant bed, a theoretical model of ignition gas flow through rigid porous media is developed. Three pressure gauges are installed in the lateral side of ignition simulator for chamber pressure measurements after ignition. The pseupropellant loaded in the chamber is similar to the standard 13/19 single-base cylindrical propellant in size. It is composed of rigid ceramic composite with low thermo conductivity. It is assumed that the pseupropellant bed is rigid in contrast to the previous elastic porous media assumption. The calculated pressure values can be verified by the experimental data well at the low loading density of pseupropellant bed of 0.18 g/cm3. However, there is still error between the experimental and calculated results in the early pressure peak position close to the ignition primer when the loading density of pseupropellant bed increases to 0.73 and 1.06g/cm3, due to the change of local permeability of pseupropellant bed at high loading density, which is assumed a constant in the model for the modeling easily. The calculations can enable better understanding of physical processes of ignition gas flow in the ignition simulator loaded with the pseupropellant bed.

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Transient Gas Flow Through Finite Linear Porous Media

Journal of Canadian Petroleum Technology ◽

10.2118/69-02-03 ◽

1969 ◽

Vol 8 (02) ◽

pp. 57-65 ◽

Cited By ~ 1

Author(s):

P. M. Dranchuk ◽

E. Chwyl

Keyword(s):

Porous Media ◽

Gas Flow ◽

Flow Through ◽

Finite Linear

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Space-time discontinuous Galerkin method for the numerical simulation of the compressible turbulent gas flow through the porous media

EPJ Web of Conferences ◽

10.1051/epjconf/201921302011 ◽

2019 ◽

Vol 213 ◽

pp. 02011

Author(s):

Jan Česenek

Keyword(s):

Numerical Simulation ◽

Porous Media ◽

Galerkin Method ◽

Discontinuous Galerkin ◽

Discontinuous Galerkin Method ◽

Gas Flow ◽

Space Time ◽

Navier Stokes ◽

Flow Through ◽

Turbulent Gas Flow

The article is concerned with the numerical simulation of the compressible turbulent gas flow through the porous media using space-time discontinuous Galerkin method.The mathematical model of flow is represented by the system of non-stationary Reynolds-Averaged Navier-Stokes (RANS) equations. The flow through the porous media is characterized by the loss of momentum. This RANS system is equipped with two-equation k-omega turbulence model. The discretization of these two systems is carried out separately by the space-time discontinuous Galerkin method. This method is based on the piecewise polynomial discontinuous approximation of the sought solution in space and in time. We present some numerical experiments to demonstrate the applicability of the method using own-developed code.

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

Entropy ◽

10.3390/e21020133 ◽

2019 ◽

Vol 21 (2) ◽

pp. 133 ◽

Cited By ~ 2

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.

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General slip regime permeability model for gas flow through porous media

Physics of Fluids ◽

10.1063/1.4954503 ◽

2016 ◽

Vol 28 (7) ◽

pp. 072003 ◽

Cited By ~ 8

Author(s):

Bo Zhou ◽

Peixue Jiang ◽

Ruina Xu ◽

Xiaolong Ouyang

Keyword(s):

Porous Media ◽

Gas Flow ◽

Flow Through Porous Media ◽

Permeability Model ◽

Slip Regime ◽

Flow Through

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A New Unified Diffusion—Viscous-Flow Model Based on Pore-Level Studies of Tight Gas Formations

SPE Journal ◽

10.2118/149223-pa ◽

2012 ◽

Vol 18 (01) ◽

pp. 38-49 ◽

Cited By ~ 42

Author(s):

Mohammad R. Rahmanian ◽

Roberto Aguilera ◽

Apostolos Kantzas

Keyword(s):

Porous Media ◽

Viscous Flow ◽

Flow Regime ◽

Gas Flow ◽

Flow Model ◽

Molecular Flow ◽

Single Element ◽

Free Molecular Flow ◽

Flow Through ◽

Tight Porous Media

Summary In this study, single-phase gas-flow simulation that considers slippage effects through a network of slots and microfractures is presented. The statistical parameters for network construction were extracted from petrographic work in tight porous media of the Nikanassin Group in the Western Canada Sedimentary Basin (WCSB). Furthermore, correlations between Klinkenberg slippage effect and absolute permeability have been developed as well as a new unified flow model in which Knudsen number acts implicitly as a flow-regime indicator. A detailed understanding of fluid flow at microscale levels in tight porous media is essential to establish and develop techniques for economic flow rate and recovery. Choosing an appropriate equation for flow through a single element of the network is crucial; this equation must include geometry and other structural features that affect the flow as well as all variation of fluid properties with pressure. Disregarding these details in a single element of porous media can easily lead to flow misinterpretation at the macroscopic scale. Because of the wide flow-path-size distribution in tight porous media, a variety of flow regimes can exist in the equivalent network. Two distinct flow regimes, viscous flow and free molecular flow, are in either side of this flow-regime spectrum. Because the nature of these two types of flow is categorically different, finding/adjusting a unified flow model is problematic. The complication stems from the fact that the viscosity concept misses its meaning as the flow regime changes from viscous to free molecular flow in which a diffusion-like mechanism dominates. For each specified flow regime, the appropriate equations for different geometries are studied. In addition, different unified flow models available in the literature are critically investigated. Simulation of gas flow through the constructed network at different mean flow pressures leads to investigating the functionality of the Klinkenberg factor with permeability of the porous media and pore-level structure.

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