caa a22 4500 465724256 CHVBK 20180323111725.0 cr unu---uuuuu 170327e19900101xx s 000 0 eng 10.1007/BF02499767 doi (NATIONALLICENCE)springer-10.1007/BF02499767 Calculating the aerogas dynamics of chamber-like mine workings on the basis of mathematical modeling [Elektronische Daten] [G. Kalabin, A. Baklanov, P. Amosov] Conclusions: 1. The sufficiently high reliability of the standard (k-ε) model for the Reynolds-stress in calculating the velocity field in plane chamber-like mine workings has been demonstrated. 2. A version of the velocity-field calculation in plane chambers by the Smagorinskii model has been proposed, using the (k-ε) model in the preliminary stage, so as to permit considerable reduction in computer time. 3. The most rational finite-difference schemes for approximation of the advection term in the turbulent-diffusion equation when estimating the air transfer in plane chamber-like workings have been recommended: a) for periodically acting localized sources of impurity ejection, scheme VII (Table 2); b) for discharge emissions of harmful impurities, scheme VI (Table 2). 4. It is shown that scheme V (Table 2) has high schematic viscosity in a nonuniform velocity field, and therefore cannot be used to calculate flows in chambers with complex geometry. 5. Using the numerical modeling of the physical fields (air velocity and impurity concentration) in a ventilated volume proposed here permits the determination either of the time to achieve the maximum permissible concentration with specified contamination-source intensities and air flow rates or the air flow rate required in a specified ventilation time. Plenum Publishing Corporation, 1990 Kalabin G. aut Baklanov A. aut Amosov P. aut Soviet Mining Kluwer Academic Publishers-Plenum Publishers 26/1(1990-01-01), 61-73 0038-5581 26:1<61 1990 26 10913 https://doi.org/10.1007/BF02499767 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02499767 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kalabin G. aut NATIONALLICENCE 700 1- Baklanov A. aut NATIONALLICENCE 700 1- Amosov P. aut NATIONALLICENCE 773 0- Soviet Mining Kluwer Academic Publishers-Plenum Publishers 26/1(1990-01-01), 61-73 0038-5581 26:1<61 1990 26 10913 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer