What is it about?

In an application like a spray, a fluid is pumped through a nozzle. The behaviour of the spray is strongly dependent on the properties of the liquid. In order to get a better understanding of this influence, a laser beam was used to stimulate ilumination ("fluorecence") of special dyes, which were added to different solvents. This fluorescence emitted by the dye within the spray enabled the recording with a fast and sensitive camera.

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Why is it important?

Sprays are useful in various applications, e.g. spray cooling, coating or fuel injection. The spray characteristics deviate, when solvents with different liquid properties are being used. To get a better understanding of this influence, an imaging approach was applied and a better insight attained.


This work is the result of a great collaboration between several institutions and offered new insights for all authors.

Hannah Ulrich
Universitat der Bundeswehr Munchen

Read the Original

This page is a summary of: Effects of liquid properties on atomization and spray characteristics studied by planar two-photon fluorescence, Physics of Fluids, August 2022, American Institute of Physics,
DOI: 10.1063/5.0098922.
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