Extension of Ergun equation for the calculation of the flow resistance in porous media with higher porosity and open-celled structure

Porous media combustion has significant advantages of high thermal efficiency and low pollution emissions. However, the flow state in the porous media will affect the reaction rate. In order to increase the rate of chemical reactions, the fluid flow resistance in the porous media must be reduced. The pressure drop test of SiC foam ceramics was carried out. By changing the pore density of the experimental materials, the pressure drop characteristics of SiC foam ceramic are tested and analyzed. Based on the classical Ergun equation, a semi-empirical formula for calculating the pressure drop gradient of SiC foam ceramics with the airflow velocity is proposed. The two constants in the formula are calculated by measurement, and the applicability of the formula is verified. This formula can quickly analyze the pressure drop characteristics of SiC foam ceramic materials. The accurate measurement of pressure drop is helpful to determine the rated pressure of the head of foam ceramic burner and reduce the investment of front-end fans in industrial burners.

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Analysis of flow resistance in fractal porous media based on a three-dimensional pore-throat model

Thermal Science and Engineering Progress ◽

10.1016/j.tsep.2020.100833 ◽

2021 ◽

Vol 22 ◽

pp. 100833

Author(s):

YingLin Li ◽

Mengli Feng

Keyword(s):

Porous Media ◽

Flow Resistance ◽

Three Dimensional ◽

Pore Throat

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The effect of flow resistance on water saturation profile for transient two-phase flow in fractal porous media

ADVANCES IN GEO-ENERGY RESEARCH ◽

10.26804/ager.2018.01.06 ◽

2018 ◽

Vol 2 (1) ◽

pp. 63-71 ◽

Cited By ~ 9

Author(s):

Ting Lu ◽

Zhiping Li ◽

Fengpeng Lai ◽

Ya Meng ◽

Wenli Ma

Keyword(s):

Porous Media ◽

Flow Resistance ◽

Two Phase Flow ◽

Water Saturation ◽

Phase Flow ◽

Two Phase ◽

Saturation Profile

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A Generalized Capillary Imbibition Model for Porous Media in Tight Reservoirs

Advances in Civil Engineering ◽

10.1155/2018/4148734 ◽

2018 ◽

Vol 2018 ◽

pp. 1-8 ◽

Cited By ~ 4

Author(s):

Zhiyuan Wang ◽

Zhengming Yang ◽

Yunhong Ding ◽

Wei Lin ◽

Ying He ◽

...

Keyword(s):

Porous Media ◽

Apparent Viscosity ◽

Flow Resistance ◽

Oil And Gas ◽

Water Injection ◽

Capillary Imbibition ◽

Gas Reservoirs ◽

Oil And Gas Development ◽

Tight Reservoirs ◽

Tight Porous Media

Capillary imbibition models have been widely studied in oil and gas development field over the past decades. However, the existing models applied to the tight reservoirs rarely take fluid flow resistance and apparent viscosity into account. To investigate the capillary imbibition characteristics of fluids in tight porous media, a generalized capillary imbibition model considering the flow resistance and apparent viscosity of fluids in tight porous media is derived. By comparing with the results of other capillary imbibition models and experimental data, the derived capillary imbibition model is verified. In addition, compared with the conventional capillary imbibition models, the derived capillary imbibition model is more consistent with the experimental results and has a wider applicability. The imbibition distance of water in tight reservoirs can also be obtained using the derived capillary imbibition model, which will facilitate the study on water injection development in tight oil and gas reservoirs.

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