In this research work, after allowing the experiment to run, we proved the possibility to dose sand in the sand feeding system with the effect of vibratory displacement. We set the disturbing frequency and amplitude, at which the maximum system performance is achieved. The sand consumption curves were obtained depending on the oscillation frequency, pulse shape, and tilt angle. A model proposed to describe the effect of vibrodisplacement in a sand feeding system. It was established that disturbances cause sand oscillations at multitude frequencies, coinciding with which resonance phenomena occur. In practice, it means the increase in consumption.

In this research, we calculated the key characteristics and parameters of the pneumatic injector using the set input and output gas flow values. We simulated the ejection of excessive air from the ambient to increase the flow rate of the air-and-sand mixture from the outlet chute of the sand feeding system of a locomotive using the CFD package of the FlowSimulation extension of the SolidWorks solid object design environment. We achieved the reduction of the compressed air consumption as compared to the standard locomotive sand-feeding systems.

In the course of the study, a computational experiment is carried out using ANSYS Fluent software package for three-dimensional models of the outflow of air-sand mixture from the outlet pipe of the locomotive sand feeding system to determine the effect of the shape of the outlet cross-section on the transportation of quartz sand particles at various outlet flow velocities.

During the study, the main characteristics and parameters of the gas jet injector of the pneumatic actuator for the locomotive sand feeding system were calculated based on the specified input and output values of gas flows. The process of ejecting an additional volume of ambient air in order to increase the outlet flow velocity of the air-sand mixture from the outlet pipe of the locomotive sand feeding system was simulated by means of the FlowSimulation package tools of the SolidWorks CFD software for solid modeling. The reduction in the compressed air consumption relative to the standard locomotive sand feeding systems has been achieved.

No abstract