76th Annual Meeting of the APS Division of Fluid Dynamics (November 19, 2023 — November 21, 2023)

V0032: Hands-on fluid mechanics during COVID-19

  • Richard Hodgkinson, The University of Sheffield
DOI: https://doi.org/10.1103/APS.DFD.2023.GFM.V0032

Techniques that image flow fields are vital to developing our understanding of fluid mechanics. One such technique is “PLIF”, or Planar Laser-Induced Fluorescence. Many dyes – including natural ones – exhibit the ability to fluoresce when illuminated with a suitable light source. Here, a sheet of UV light from a domestic security marking black light is used as an alternative to a laser source, to visualise the dissolution of an effervescent vitamin tablet as it dissolves. This was conducted purely for artistic purposes, at home during COVID-19, using a standard photographic camera to record the video. A tablet fragment is used in chilled water to slow down dissolution and prolong the visibility of high contrast patterns.

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