Dynamic simulation of closed cycles of fine grinding
Journal Title: Технічна механіка, Техническая механика, Technical Mechanics - Year 2014, Vol 2, Issue 2
Abstract
Taking into account high power consumption of fine grinding, it is necessary to develop optimal conditions of production of the pulverizing mill with the required output of the control class and reduced power consumption. Based on the research conducted and current technology of closed cycles for fine grinding, the regularities of variations in the dependency relating a newly formed surface of a pulverized product with power inputs for this process are established. The main goal of fine grinding is formulated: determination of conditions and time when grinding achieves a critical level. The dynamic results for modelling mineral closed-cycle fine grinding are presented. Based on simulation of grinding kinetics considering transitions between material fractions in a mill, the superficial parameter relating the capacity on a control class with a specific surface of grinding product is determined. It allowed improvement of the mill capacity at the required product dispersivity.
Authors and Affiliations
N. Pryadko
Conditions of stability of switching systems
Dynamic systems described by a combination of differential equations and a discrete switching signal are examined. The research objective is to find an upper estimate for the Lyapunov maximum exponent of the switched sy...
Рrediction of changes in wheel profile of railway vehicle due to operational wear
The investigation objective was to develop the technique for predicting railway vehicle wheels wear and changes in their profiles in operation. Methods of mathematical and computer simulation, numerical integration, osci...
. On the aerodynamic optimization of impellers of supersonic compressor stages.
The study deals with the pressing problem of diminution in the computer time for an aerodynamic optimization of blade rims of axial compressors when a numerical simulation of the flow based on the full averaged Navier-St...
Selection of design parameters and control programs at initial stage of designing launch vehicles
The problem of the optimization of the basic design parameters and programs of the motion control of liq-uid launch vehicles is formulated. Programs of the motion control of space launch vehicles are determined in the cl...
Considering dissipative forces for mathematical modeling longitudinal vibrations of liquid launch vehicle body
The effects of fluid filling the propellant tanks on the characteristics of the dominant harmonics of the lon-gitudinal vibrations of the launch vehicle body with a tandem configuration of stages are analyzed using the u...