A numerical investigation of drop formed vortex rings

D. Morton, M. Rudman, J. L. Liow

Research output: Chapter in Book/Report/Conference proceedingConference PaperResearchpeer-review

1 Citation (Scopus)

Abstract

A validated numerical scheme for simulating incompressible free surface flows has been used to investigate the formation of vortex rings that result from the impact of a water drop onto the surface of a deep water pool. Simulations of a 2.9mm drop impacting at 0.8m/s and 2.5m/s indicates new features of vortex ring formation that have not been reported before. For impact at 0.8m/s, numerical results predict the formation of two vortex rings during collapse of the crater that follows impact. This is significant since previous experimental studies assumed that a single impact produced a single vortex ring. Numerical results for impact at 2.5m/s predict the formation of a small vortex ring during the initial growth of a vertical Rayleigh jet. If confirmed, the formation such vortex rings disagrees with existing theories that vortex rings do not occur for Weber numbers greater than 8.

Original languageEnglish
Title of host publicationProceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998 (Volume 2)
EditorsMC Thompson, K Hourigan, MC Thompson, K Hourigan
PublisherOCE, Monash University
Pages949-952
Number of pages4
ISBN (Print)0732620449
Publication statusPublished - 1 Dec 1998
Externally publishedYes
EventAustralasian Fluid Mechanics Conference 1998 - Monash University, Melbourne, Australia
Duration: 13 Dec 199818 Dec 1998
Conference number: 13th

Conference

ConferenceAustralasian Fluid Mechanics Conference 1998
Abbreviated titleAFMC 1998
CountryAustralia
CityMelbourne
Period13/12/9818/12/98

Cite this

Morton, D., Rudman, M., & Liow, J. L. (1998). A numerical investigation of drop formed vortex rings. In MC. Thompson, K. Hourigan, MC. Thompson, & K. Hourigan (Eds.), Proceedings of the 1998 Thirteenth Australasian Fluid Mechanics Conference, Melbourne, Australia, 13-18 December 1998 (Volume 2) (pp. 949-952). OCE, Monash University.