Measurement of time response of helium-filled soap bubbles

Knud Erik Meyer*, Carl Oscar Meyer-Johansen, Ask Finderup

*Corresponding author for this work

    Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

    186 Downloads (Pure)

    Abstract

    A new method is proposed for measuring the time response of helium-filled soap bubbles (HFSB). A flow of air with bubbles is led through a square flow channel and a two dimensional slit is introduced downstream in the channel. This creates a strong local flow acceleration. Bubble paths are tracked with a camera and the time response is found by comparing bubble speed and acceleration to the local flow speed. The method can be used in a portable setup for monitoring bubble quality during experiments. Bubbles from a new bubble generator design are tested. The generator produces mono-disperse bubbles with a low time response, but data also suggest that the generator needs further optimization. Air-filled soap bubbles (AFSB) are also tested and appear to have a smaller time response than earlier reports on AFSB.
    Original languageEnglish
    Title of host publicationConference Proceedings: 13th International Symposium on Particle Image Velocimetry (ISPIV 2019)
    EditorsChristian J. Kähler, Rainer Hain, Sven Scharnowski, Thomas Fuchs
    PublisherInstitute of Fluid Mechanics and Aerodynamics
    Publication date2019
    Pages855-861
    DOIs
    Publication statusPublished - 2019
    Event13th International Symposium on Particle Image Velocimetry - Munich, Germany
    Duration: 22 Jul 201924 Jul 2019
    Conference number: 13

    Conference

    Conference13th International Symposium on Particle Image Velocimetry
    Number13
    Country/TerritoryGermany
    CityMunich
    Period22/07/201924/07/2019

    Fingerprint

    Dive into the research topics of 'Measurement of time response of helium-filled soap bubbles'. Together they form a unique fingerprint.

    Cite this