公开(公告)号：US20250085207A1

公开(公告)日：2025-03-13

申请号：US18925544

申请日：2024-10-24

Applicant: KOREA GAS CORPORATION

Inventor： Chang Hoon SHIN

IPC: G01N15/08

Abstract: Provided a method for predicting permeability according to the geometrical change in a porous medium on the basis of a superficial effective diameter, wherein the permeability according to geometrical changes in the porous medium is precisely predicted. The method for predicting permeability according to geometric change in the porous medium comprises: providing a porous medium; obtaining first porosity and first permeability at a plurality of points of the porous medium, respectively; calculating a first superficial effective diameter using the first porosity and the first permeability; establishing a first correlation between the first porosity and the first superficial effective diameter, a second correlation between the first permeability and the first superficial effective diameter, and a third correlation between the first porosity and the first permeability; and using the correlations to predict a second permeability for a second porosity changed by a geometrical change in the porous medium.

公开(公告)号：US20200025668A1

公开(公告)日：2020-01-23

申请号：US16336920

申请日：2017-09-29

Applicant: KOREA GAS CORPORATION

Inventor： Chang Hoon SHIN

IPC: G01N15/08

Abstract: Provided is a method of calculating a tortuous hydraulic diameter of a porous medium for laminar flow and turbulent flow considering a geometric feature and a friction loss feature. A method of calculating a tortuous hydraulic diameter of a porous medium, according to an embodiment of the present invention, includes providing porosity and a specific surface area of a porous medium, calculating a hydraulic diameter of the porous medium by using the porosity and the specific surface area, calculating tortuosity of the porous medium, and calculating a tortuous hydraulic diameter corresponding to a function of tortuosity, by using the hydraulic diameter and the tortuosity of the porous medium.

公开(公告)号：US20250110036A1

公开(公告)日：2025-04-03

申请号：US18978198

申请日：2024-12-12

Applicant: KOREA GAS CORPORATION

Inventor： Chang Hoon SHIN

IPC: G01N15/08 ,  G06F17/11

Abstract: Provided a method of predicting permeability of porous material based on anisotropic flow model. The method of predicting permeability of porous material based on anisotropic flow model comprises: providing a porous medium; establishing a concentric annulus flow model for the porous medium; calculating a concentric annulus cylinder interstitial flow velocity, a concentric annulus cylinder hydraulic tortuosity, and a concentric annulus cylinder hydraulic diameter using the concentric annulus flow model; and predicting a permeability for the porous medium using the concentric annulus cylinder hydraulic tortuosity and the concentric annulus cylinder hydraulic diameter.

公开(公告)号：US20190265149A1

公开(公告)日：2019-08-29

申请号：US16344942

申请日：2017-10-25

Applicant: KOREA GAS CORPORATION

Inventor： Chang Hoon SHIN

IPC: G01N15/08 ,  G06F17/15

Abstract: Provided is a method of calculating permeability of a porous medium by using analysis of feature variables of friction flows through the porous medium for laminar and turbulent flows considering a geometric feature and a friction loss feature. A method of calculating permeability of a porous medium, according to an embodiment of the present invention, includes obtaining hydraulic diameters and friction factor-Reynolds number relationships of a plurality of reference porous media, deriving a hydraulic diameter-friction factor-Reynolds number correlation between the hydraulic diameters and the friction factor-Reynolds number relationships, and obtaining permeability of a porous medium to be predicted, by using the hydraulic diameter-friction factor-Reynolds number correlation.