Experimental study and analysis on the rising motion of grains in a vertically-vibrated pipe
Liu Yua)†, Zhao Jun-Hongb)
       
Change in the height ( h ) of the grain column inside the pipe with time ( t ) at Γ = 3.3 and Γ = 5.0, respectively. h 0 is the initial height of the grain column. The solid lines are the calculating values using Eq. ( 6 ).