Refractive-index-matched polymer for experimental fluid dynamics in water

In experimental fluid dynamics, it would be invaluable to have solids with a refractive index similar to that of water, hence simplifying the use of existing facilities to study flows around complex geometries. Here we report a polymer that is refractive-index-matched with water at room temperature...

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Bibliographic Details
Published in:Experiments in fluids 2021-12, Vol.62 (12), Article 249
Main Authors: Fort, Charles, Bardet, Philippe M.
Format: Article
Language:English
Subjects:
Engineering
Engineering Fluid Dynamics
Engineering Thermodynamics
Fluid dynamics
Fluid- and Aerodynamics
Heat and Mass Transfer
Laser applications
Laser induced fluorescence
Letter
Molecular tagging velocimetry
Particle image velocimetry
Polymers
Refractivity
Room temperature
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Summary:In experimental fluid dynamics, it would be invaluable to have solids with a refractive index similar to that of water, hence simplifying the use of existing facilities to study flows around complex geometries. Here we report a polymer that is refractive-index-matched with water at room temperature and can be cast in thick specimens. We successfully demonstrated its use with three common laser-based diagnostics: laser-induced fluorescence, particle image velocimetry, and molecular tagging velocimetry.
ISSN:0723-4864
1432-1114
DOI:10.1007/s00348-021-03347-9