Determining experimental applicability limits of Spalart-Almares turbulent model and Reynolds stresses transfer model at mass transfer intensification in rotary-divergent controlled flows

This problem can arise in mechanics, chemistry and catalysis in the mass transfer intensification. The mass transfer characteristics were experimentally analyzed in a controlled rotary-divergent flow. The laser Doppler anemometer was used for turbulent mass transfer diagnostics. The experimental investigation was used to verify the numerical calculations. The numerical simulation has shown the presence of a near-wall jet after a rotary device and the reverse flow zones formation. The model of Reynolds stress transfer adequately describes the flow in range of flow rates from 50 to 250 n.m³/h. The Spallart-Almares turbulence model fails to adequately describe the flow at all flow rates. (paper)