Vibration of Flexible Tube Induced by Pulsatile Flow of Emulsions

The vibration of a flexible tube induced by the pulsatile flow of an emulsion was studied experimentally. Three flexible tubes (thin silicon tube, thick silicon tube and vinyl tube) were used and their vibrations were measured using a high sensitive gap sensor. Experimental results showed that the pulsatile flow of emulsions had an effect to increase the amplitude of wall displacement compared with the pulsatile flow of water. In addition, it was suggested that the relaminarization of pulsatile flow had a strong effect on the behavior of flexible tubes.