68th Annual Meeting of the APS Division of Fluid Dynamics (November 22, 2015 — November 24, 2015)

V0067: Dancing Jets

Authors

• Dominic Henry, University of Birmingham, UK
• Jamal Uddin, University of Birmingham, UK
• Jeremy Marston, Texas Tech University, USA
• Mohammad Mansoor, King Abdullah University of Science and Technology, KSA
• Sigurdur Thoroddsen, King Abdullah University of Science and Technology, KSA

DOI: https://doi.org/10.1103/APS.DFD.2015.GFM.V0067

The simple action of a liquid falling from a solid produces some remarkable formations, whether that is a series of liquid threads or a liquid sheet. We see in this video a few of these formations, whereby glycerol solutions leave a curtain coating slot-fed die. Firstly using fluorescein to take a closer look at what happens within the threads, we then discover the formations depend upon the incoming flow rate, and find that as the flow rate varies, the liquid jets begin to oscillate (or ‘dance’) before forming a liquid sheet. This phenomenon also displays hysteresis effects.