Analysis of the Effect of Funnel Outlet Shape and Vibration Factors on Particle Mass Flow under Gravity
In order to gain a deeper understanding of the motion state of funnel particles under external excitation,this paper,based on the discrete element method,explores the influence of outlet dip ngle,vibration amplitude,vibration direction,vertical velocity of particles and whether to install the outlet bundle device on the particle flow rate under the gravity-driven funnel flow mode.The experimental results show that the increase of outlet angle and vibration amplitude is conducive to the increase of particle flow rate.Without considering the initial velocity and baffle,as the vibration direction gradually shifts from horizontal to vertical,the particle flow rate decreases accordingly.When the vibration direction is horizontal,the particle flow rate reaches the maximum value.However,the result is opposite when the bunching device is installed and the vertical velocity is set.Under the condition that the outlet is not bunching and the amplitude is zero,the vertical velocity is beneficial to the increase of the flow rate.With the increase of the amplitude,the flow rate increases steadily,but the growth rate is lower than that of the flow rate without vertical velocity in the same environment.The baffle at the outlet is not conducive to the discharge of particulate matter under low amplitude,but after increasing the amplitude and gradually turning the vibration direction towards the vertical direction,the particle flow rate increases significantly.
particle flowvibration amplitudevibration directionflowdiscrete element
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