Abstract
We investigate numerically the contraction dynamics of a long air filament surrounded by liquid for a range of Ohnesorge numbers Oh. The contraction velocity rises to a maximum value Umax and then decreases due to the hydrodynamic drag force from the liquid medium. Umax follows a capillary-inertial scaling for low Oh while it shifts to a capillary-viscous scaling with increasing Oh. Our simulations reveal that contracting air filaments always first rupture via end-pinching mechanism before the Rayleigh–Plateau instability can develop.
Highlights
Taylor[52] and Culick[53] independently studied the retraction dynamics of a planar liquid sheet within a passive medium and showed that its retraction velocipty ffiffirffiffieffiaffifficffiffihffiffiffieffis a steady value, namely, the Taylor–Culick velocity UTsC 1⁄4 2r=qle, with r the surface tension, ql the liquid density, and e the thickness of the sheet
We investigate numerically the contraction dynamics of a long air filament surrounded by liquid for a range of Ohnesorge numbers Oh
The contraction velocity rises to a maximum value Umax and decreases due to the hydrodynamic drag force from the liquid medium
Summary
Cite as: Phys. Fluids 33, 051702 (2021); https://doi.org/10.1063/5.0048732 Submitted: 25 February 2021 • Accepted: 25 March 2021 • Published Online: 03 May 2021 ARTICLES YOU MAY BE INTERESTED IN Maximum spreading of an impacting air-in-liquid compound drop Physics of Fluids 33, 061703 (2021); https://doi.org/10.1063/5.0053384 Revisiting -law for the evaporation of dilute droplets Physics of Fluids 33, 051701 (2021); https://doi.org/10.1063/5.0051078 Impact of an air-in-liquid compound drop onto a liquid surface Physics of Fluids 32, 041705 (2020); https://doi.org/10.1063/5.0005702
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
