TY JOUR TI PROBLEMS OF APPLICABILITY OF MATHEMATICAL MODELS FOR CALCULATION OF AIR FLOW VELOCITY AND BUBBLE DIAMETERS IN THE GENERATION OF LOW-EXPANSION AIR-MECHANICAL FOAM KW JO Siberian Fire and Rescue Bulletin AU Kamlyuk, A.N. PY 2025 IS 2025 PB FSBEE HE Siberian Fire and Rescue Academy EMERCOM of Russia