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- Title
Quality evaluation and error mitigation for mine climate models.
- Authors
DANKO, George
- Abstract
Currently available, commercial mine ventilation software models usually do not have the "thermal history effect" (also known as thermal flywheel effect) solver. It is well recognized that any mine climate model without thermal history component for thermal-humidity simulations will give erroneous result, however, such models are rarely available for the mine ventilation engineer. The goal of this study is to find the best way of using the simple thermal-humidity simulation models without the thermal history component for reduced simulation error in the thermal design of mine ventilation. Three models are used for the testing a proposed simplification application for dynamic thermal-humidity simulations in underground mine. The first model is set up for the accurate solution, complete with the thermal history component, processing past and current temperature and heat flow data. Results from the first model are used as the reference for comparison. The second model is configured as a conventional mine climate model without including the thermal history component, simplifying the past temperatures with a step-change function and calculating the strata heat from the Gibson function type solution. The third model is set up according to a new, simplified, proposed method for error mitigation, using the superposition of two step-change solutions only. A long, single drift example is used for the numerical study for comparison of the three model results. Conclusions are drawn with recommendations to the engineers for improving the simplified, step-change-type numerical simulation tool for mine ventilation and climate design.
- Publication
Quality - Access to Success, 2019, Vol 20, p123
- ISSN
1582-2559
- Publication type
Academic Journal