Aleksandras Chlebnikovas

Investigation into the Aerodynamic Parameters of the Recently Designed Two-Level Cylindrical Multi-Channel Cyclone-Separator

The multichannel cyclone-separators is air cleaning equipment of new generation that can remove fine solid particles—up to 2 microns from airflow and reach the general effectiveness of 95%. The work of a channel cyclone-separator is based on centrifugal forces and additionally occurring filtration process. The structure of the cyclone-separator allows achieving higher air flow amount in treating under the same dimensions of the device, thus saving the area required of a working device and operating costs. The article describes the peculiarities of the aerodynamic properties of the device and analyses the results of the cyclone-separator having different inner structures. Research results were obtained at inflow velocities of 12 m/s to 16 m/s. The inner geometry using half-rings and quarter-rings were analyzed. This is the first article testing for multichannel cyclone-separator and determined distributions of aerodynamic parameters.

Numerical study of the aerodynamic parameters in a two-level multichannel cyclone

ABSTRACT Research has been designed to analyse changes in the aerodynamic parameters of the single-phase air flow in a multi-channel cylindrical cyclone for separation of particular matter from the flow, involving the task of numerical modelling for the tangential inlet cyclone. The research contains a review of numerical modelling works for cyclones, applicable models and equations for the complex description of turbulent flow. Differential equations are provided to reflect numerical solutions using the finite-volume method and k-ε turbulence model. The values obtained have been compared with the physical model of the given cyclone. The mean relative error for velocity values is ±8.1% and for aerodynamic resistance – 11.9%.

Air stream velocity modelling in multichannel spiral cyclone separator

AbstractNumerical modelling problem is investigated in a gas aerodynamics multichannel spiral cyclone separator with a tangential inflow. Experimental and theoretical papers analysing cyclone separator with particularly complex turbulent flow were reviewed. The three-dimensional transport differential equations for incompressible laminar and turbulent flow inside the cyclone separator were presented. They were numerically solved by finite volume method using the Re-Normalisation Group (hereinafter RNG) k-e turbulence model. The numerical air flow movement was modelled in cyclone separator with the following dimensions: 0.95 m height, 0.330 m diameter, 0.88 m height of spiral-cylindrical part, 0.39 m height of conical part, inflow dimensions (on the side of cylindrical part) according to the drawings were a × b = 28 × 95 mm. The mathematical model of air flow movement in cyclone separator was composed by Navier-Stokes (Reynolds) as the three-dimensional differential equation system. The modelling results w...