Figure 3
From: Ultrasonic tracking of a sinking ball in a vibrated dense granular suspension
Sinking dynamics for different intruder-sizes and for different vibration intensities Γ. (a1) Depth versus time for an intruder with R = 4 mm and (a2) for an intruder with R = 7 mm. (b1) Instantaneous velocity versus sinking depth obtained from (a1) and (b2) from (a2). The black lines correspond to the solutions fitted in the quasi-steady regime with Eq. 4.
