Jump to main content
Jump to site search
PLANNED MAINTENANCE Close the message box

Scheduled maintenance upgrade on Thursday 4th of May 2017 from 8.00am to 9.00am (BST).

During this time our websites will be offline temporarily. If you have any questions please use the feedback button on this page. We apologise for any inconvenience this might cause and thank you for your patience.

Issue 107, 2016, Issue in Progress
Previous Article Next Article

Bubble generation in liquid rope coiling

Author affiliations


We present an experimental study of liquid rope coiling in order to explore different possibilities of air bubble generation in a viscous fluid. A column of viscous fluid falling on a smooth solid surface exhibits different behaviours, e.g., axisymmetric stagnation flow, coiling, rotatory folding, supercoiling, etc. These states provide ample opportunity for air to get trapped inside the body of a fluid. We investigate bubble generation mechanisms by studying the instability of a falling fluid rope and the characteristics of the observed bubbles. Our experiments show that a viscous rope undergoing supercoiling on the impact surface can, at times, produce a four-branched spiral pattern of bubbles. Finally, we provide a phase diagram illustrating the bubble properties relevant to the flow rate and fall height of the viscous jet. Our study provides a very simple method for the generation of mono/bi-dispersed bubbles in viscous fluids at high rates with an ability to tune the bubble size.

Graphical abstract: Bubble generation in liquid rope coiling

Back to tab navigation
Please wait while Download options loads

Publication details

The article was received on 14 Sep 2016, accepted on 31 Oct 2016 and first published on 01 Nov 2016

Article type: Paper
DOI: 10.1039/C6RA23012A
Citation: RSC Adv., 2016,6, 105469-105475
  •   Request permissions

    Bubble generation in liquid rope coiling

    H. Hosseini, A. Farnudi, M. H. Khatami and M. Habibi, RSC Adv., 2016, 6, 105469
    DOI: 10.1039/C6RA23012A

Search articles by author