Gravity-driven thermoviscous liquid film down a heated or cooled vertical cylinder

Khanum, Sana; Tiwari, Naveen

doi:10.1103/physrevfluids.5.094005

Cited by 11 publications

(2 citation statements)

References 43 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2009), slip-enhanced drop formation (Halpern & Wei 2017), disjoining pressure (Ji et al. 2019) and thermal gradients (Khanum & Tiwari 2020; Ji et al. 2021).…”

Section: Introductionmentioning

confidence: 99%

“…An evolution equation for the interface was derived by Craster & Matar (2006) using the long-wavelength approximation and provided good predictions for the shape and speed of drops flowing down a fibre. More recently, models have considered streamwise viscous diffusion (Ruyer-Quil et al 2009), slip-enhanced drop formation (Halpern & Wei 2017), disjoining pressure (Ji et al 2019) and thermal gradients (Khanum & Tiwari 2020;Ji et al 2021).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Bead-on-fibre morphology in shear-thinning flow

Gabbard

Bostwick

2023

J. Fluid Mech.

View full text Add to dashboard Cite

Thin-film flow down a fibre exhibits rich dynamics and is relevant to applications such as desalination, fibre coating and fog harvesting. These flows are subject to instabilities that result in dynamic bead-on-fibre patterns. We perform an experimental study of shear-thinning flow down fibres using 20 different xanthan gum solutions as our working liquid. The bead-on-fibre morphology can be oriented either symmetrically or asymmetrically on the fibre, and this depends upon the surface tension, fibre diameter and liquid rheology, as defined by the Ostwald power-law index. For highly shear-thinning liquids, it is possible for the pattern to be complex and exhibit simultaneously both asymmetric large beads and symmetric small beads in the isolated and convective flow regimes. We quantify the transition between flow regimes and bead dynamics for the asymmetric morphology, and compare with Newtonian flow, as it depends upon the experimental parameters. Finally, the dimensionless bead frequency is shown to scale with the Bond number for all of our experimental data (symmetric and asymmetric).

show abstract

“…2009), slip-enhanced drop formation (Halpern & Wei 2017), disjoining pressure (Ji et al. 2019) and thermal gradients (Khanum & Tiwari 2020; Ji et al. 2021).…”

Section: Introductionmentioning

confidence: 99%