Citation

Zhang X. China Saf. Sci. J. 2020; 30(2): 60-65.

Copyright

(Copyright © 2020, China Occupational Safety and Health Association, Publisher Gai Xue bao)

DOI

10.16265/j.cnki.issn1003-3033.2020.02.010

PMID

unavailable

Abstract

In order to study influence of time factor on fitting and calculation of diffusion coefficient, theoretical error during fitting process was analyzed based on classical diffusion model. Then, variation trends of diffusion coefficient and determination coefficient R2 over time were analyzed through conventional and fixed intercept linear methods with experimental data of gas diffusion dynamics in coal particles at different time periods and intervals. The results show that theoretical error of fitting decreases as diffusion time extends, and diffusion coefficient calculated by conventional fitting and fixed intercept fitting tends to be the same over time. However, it varies a lot with the increase of time period and interval and is affected by data at zero time. © 2020 China Safety Science Journal. All rights reserved.

Language: zh