Abstract
In this paper, we investigate the relative contribution of shock losses to the total pressure drop in a mine ventilation network. It is shown that for a specific class of mines it is necessary to consider the shock losses of mine airway junctions. This class includes mines with large airway cross-sectional areas and extended work areas. A comparative analysis of existing literature on methods to calculate shock losses is conducted using ventilation system with parallel airways. Existing methods are compared with the results of 3D numerical simulation of airflow through junctions. Several existing methods for shock loss calculation incorrectly assume airways being symmetrical with uniform airflow distribution of airflow in parallel airways This symmetry is physically incorrect, and asymmetric methods is identified to more accurately calculate shock losses underground.
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Semin, M., Shalimov, A. (2019). Calculating Shock Losses in Mine Ventilation Networks. In: Chang, X. (eds) Proceedings of the 11th International Mine Ventilation Congress. Springer, Singapore. https://doi.org/10.1007/978-981-13-1420-9_6
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DOI: https://doi.org/10.1007/978-981-13-1420-9_6
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