Development of a model of atmospheric aerothermodynamics for the study of dusting processes at tailings dumps using COMSOL software

Author:

Amosov P. V.1ORCID,Baklanov A. A.2ORCID

Affiliation:

1. Institute of North Industrial Ecology Problems KSC RAS

2. World Meteorological Organization

Abstract

An overview of studies of aerothermodynamics and atmospheric pollution at mining facilities using computational fluid dynamics software systems (CFD modeling) has been presented. Both specialized and non-specialized software are marked. The review focuses on the studies performed using the FLOWVISION, ANSYS FLUENT and COMSOL software codes. An aerothermodynamic model of the atmosphere is described in which the equations of dynamics in the incompressible fluid approximation are supplemented by the heat transfer equation and the parameters of Coriolis, convection (buoyancy), background stratification and radiation flux. The necessary modifications in the COMSOL software are described, which make it possible to carry out studies of atmospheric aerothermodynamics under various atmospheric conditions. A two-dimensional CFD model of the atmosphere has been built and tested on a simplified representation of the tailings dump. At a fixed wind flow velocity of 5 m/s and variations in the background stratification parameter (from –0.05 to +0.05 °C/m), numerical experiments have been performed and the calculation results have been analyzed. Differences in the aerodynamic parameters of the flows and the spatial distribution of temperature under different atmospheric conditions are noted. Estimates of the dynamic velocity at the dusting height and the vertical mass flux using the empirical dependence of the dusting intensity are performed. The analytical dependence of the vertical mass flux as a function of the stratification parameter is discussed. The asymmetry (relative to the neutral state of the atmosphere) of the magnitude of the vertical mass flux in comparison with the unstable and inversion states is shown. In stable atmospheric conditions, the magnitude of the vertical flux of the dust mass, and hence the pollution of the atmosphere downstream, will be noticeably higher than in unstable states.

Publisher

FSEI HPE Murmansk State Technical University

Subject

Materials Science (miscellaneous)

Reference50 articles.

1. 1. Amosov, P. V. 2022. The results of the analysis of numerical simulation of the process of ventilation of the open pit at different locations of the dust and gas cloud and variation of wind flow velocity. Bulletin of the Saint Petersburg State Institute of Technology (Technical University), 60(86), pp. 63-69. DOI: 10.36807/1998-9849-2022-60-86-63-69. EDN: GLRSBT. (In Russ.)

2. 2. Amosov, P. V., Baklanov, A. A., Makarov, D. V., Masloboev, V. А. 2022. Numerical modeling of atmospheric pollution in the approaches of random selection of discrete dusting sites and interval distribution of dust size. Vestnik of MSTU, 25(1), pp. 61-73. DOI: https://doi.org/10.21443/1560-9278-2022-25-1-61-73. EDN: YBIHJK. (In Russ.)

3. 3. Amosov, P. V., Baklanov, А. А., Masloboev, V. А. 2018a. Justification of the methodical approach to estimation of dust intensity at tailing dump. Vestnik Kolskogo nauchnogo tsentra, 1(10), pp. 5-14. DOI: https://doi.org/10.25702/KSC.2307-5228-2018-10-1-5-14. (In Russ.)

4. 4. Amosov, P. V., Kozyrev, S. А., Nazarchuk, О. V. 2019. Investigation of the influence of the thermal factor on the aerodynamic parameters of the open-pit atmosphere based on three-dimensional computer modeling. Mining Informational and Analytical Bulletin (scientific and technical journal), 11(S37), pp. 322-332. EDN: TNQCLC. (In Russ.)

5. 5. Amosov, P. V., Kozyrev, S. А., Nazarchuk, О. V. 2018b. Development of a computer model of atmospheric aerothermodynamics open-pit at Ansys Fluent. Bulletin of the Saint Petersburg State Institute of Technology (Technical University), 44(70), pp. 121-125. DOI: 10.15217/issn1998984-9.2018.44.121. (In Russ.)

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3