Study on the Radial and Axial Temperature Fields of Coal Roadway under Seasonal Fluctuation Boundary
Joint Authors
Li, Sen
Song, Huaitao
Qin, Yueping
Wu, Jiansong
Wang, Gongzhong
Niu, Cong
Wu, Zeqi
Source
Mathematical Problems in Engineering
Issue
Vol. 2019, Issue 2019 (31 Dec. 2019), pp.1-17, 17 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2019-08-08
Country of Publication
Egypt
No. of Pages
17
Main Subjects
Abstract EN
The underground ventilation in coal mine comes from the ground air so that the seasonal fluctuation of atmospheric temperature inevitably has influence upon its climate.
The paper obtains a simplified mathematical calculation method of the radial and axial temperature fields to furnish a supplement to air temperature prediction of coal roadway with the emphasis on the influence of seasonal characteristic of inlet airflow.
The results reveal that the propagation of radial and axial temperature wave has the similar characteristic of amplitude decay and phase delay.
In the radial direction, the main factor is the dimensionless annual cycle time; and in the axial direction, it is influenced by the location-related dimensionless time, the Nusselt number, the Biot number, and the dimensionless annual cycle time.
In addition, for the wave amplitude, they present the negative exponential trend as the location increases, the overall shape of which resembles a folded page; for the delayed phase, they present the linear variation trend as the location increases, the overall shape of which resembles a parallelogram.
In the paper, the evolution mechanism of temperature field of coal roadway under seasonal fluctuation boundary is profoundly comprehended, which has important guiding significance for the field engineer.
American Psychological Association (APA)
Song, Huaitao& Qin, Yueping& Wu, Jiansong& Wang, Gongzhong& Li, Sen& Niu, Cong…[et al.]. 2019. Study on the Radial and Axial Temperature Fields of Coal Roadway under Seasonal Fluctuation Boundary. Mathematical Problems in Engineering،Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1194646
Modern Language Association (MLA)
Song, Huaitao…[et al.]. Study on the Radial and Axial Temperature Fields of Coal Roadway under Seasonal Fluctuation Boundary. Mathematical Problems in Engineering No. 2019 (2019), pp.1-17.
https://search.emarefa.net/detail/BIM-1194646
American Medical Association (AMA)
Song, Huaitao& Qin, Yueping& Wu, Jiansong& Wang, Gongzhong& Li, Sen& Niu, Cong…[et al.]. Study on the Radial and Axial Temperature Fields of Coal Roadway under Seasonal Fluctuation Boundary. Mathematical Problems in Engineering. 2019. Vol. 2019, no. 2019, pp.1-17.
https://search.emarefa.net/detail/BIM-1194646
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1194646