Identification of Parameters for High-Pressure Hydro Vortex Nozzles for Dust Suppression
V. N. Makarov, A. V. Ugol'nikov, N. V. Makarov, L. A. Antropov
Ural State Mining University, Yekaterinburg, 620144 Russia
Keywords: Hydro vortex orthokinetic inertia hetero coagulation, hydro vortex nozzle, circulation flow, Weber number, Laplace criterion, bound vortex, similarity indicators, dispergating efficinency
Abstract
Based on the mathematical model of hydro vortex orthokinetic inertia hetero coagulation, the hydro-vortex nozzle parameters air identified for a dust suppression facility for prevention of blasts and induced accidents in mines. Using the similarity theory and dimensionality analysis, the similarity criteria are obtained for the process of dispergating in the conditions of rotational motion of liquid drops. It is shown that the main pulverization efficiency criteria for liquid drop in the hydro vortex nozzle are the Weber number, Laplace criterion and three indicators of inertia and viscosity of liquid, and kinematic similarity. The calculations and tests reveal the possibility of enhancing dispergating efficiency by 15%, reducing the average diameter of liquid drops by 2.5 times, and reducing the liquid flow rate by 10%.
|
