Fig. 2: The motion of the intruder and the convection of the bed particles during the preparation procedures.
From: Unraveling the role of gravity in shaping intruder dynamics within vibrated granular media
a The procedure S1 (an example: genv = 0.125g, f = 5 Hz, Γ = 1.8) to place the intruder to the bottom, and (b) the procedure S2 (an example: genv = 0.125 g, f = 8 Hz, Γ = 4.53) to place the intruder to the top. The frame line in red, located at Z = 5 cm, represents the particle filling height, and the yellow sphere indicates the intruder. The blue dots are bed particles. c The diagram of the granular convection and intruder for S1. d The flow field observed from the front window during procedure S1. e The diagram of the granular convection and intruder for S2.
