Experimental Study on Reynolds Number Evolution of Gas-Filled Coal
Joint Authors
Liu, Chao
Li, Minghui
Zhao, Honggang
Source
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-10, 10 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-07-01
Country of Publication
Egypt
No. of Pages
10
Main Subjects
Abstract EN
The flow state of gas in coals is very complicated.
We should pay attention to whether the permeability calculated by Darcy’s law is in accordance with the actual situation.
We conducted an experiment on coal permeability and deformation under fixing confining pressure and increasing axial stress conditions.
The objective is to investigate the variation of Reynolds number Re.
In this study, the dynamic evolution of the Reynolds number is calculated under the relevant assumptions.
The Reynolds number increases with an increase in the axial stress.
In addition, the larger the value of initial Reynolds numbers, the greater the value of Re in the postpeak, and the possibility of nonlinear flow state is higher.
Further, if the mass density (ρ) and fluid viscosity (μ) are constant, the decrease in the amplitudes of the flow rate is less than the increase in the equivalent diameter of the seepage path.
Moreover, the tensile stress generated around the pores and fractures parallel or nearly parallel to the axial stress direction with increase in the axial stress results in an increase in the Reynolds numbers and equivalent diameter of the seepage path increase due to the development, expansion, and penetration of the cracks.
American Psychological Association (APA)
Liu, Chao& Li, Minghui& Zhao, Honggang. 2019. Experimental Study on Reynolds Number Evolution of Gas-Filled Coal. Geofluids،Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1154332
Modern Language Association (MLA)
Liu, Chao…[et al.]. Experimental Study on Reynolds Number Evolution of Gas-Filled Coal. Geofluids No. 2019 (2019), pp.1-10.
https://search.emarefa.net/detail/BIM-1154332
American Medical Association (AMA)
Liu, Chao& Li, Minghui& Zhao, Honggang. Experimental Study on Reynolds Number Evolution of Gas-Filled Coal. Geofluids. 2019. Vol. 2019, no. 2019, pp.1-10.
https://search.emarefa.net/detail/BIM-1154332
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1154332