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- W1813305861 abstract "When liquids are cooled below their freezing point without freezing, they are called supercooled.This counter-intuitive process occurs when an energy barrier exists for creating a nucleusof frozen substance in the liquid. A common occurrence of supercooled liquids is in the form ofsupercooled water droplets constituting atmospheric clouds at medium and high altitudes, and acommon mechanism that causes such droplets to freeze is the presence of aerosols that serve asnucleation points. It is of high importance to our knowledge of cloud formation and the role ofaerosols and ice clouds in the global climate system to understand the ways in which supercooleddroplets behave, and the mechanisms by which they can freeze. Furthermore, it is highly relevantto the aircraft industry, since supercooled droplets impacting on airplane wings are one of the primecauses of aircraft icing.In this thesis, we present experimental and numerical results on the freezing processes of supercooleddroplets. We have used di�erent experimental techniques to create supercooled macro- aswell as microdrops, and performed experiments to vary their temperature and the inuence of thistemperature on a number of their properties. We have compared the characteristics of impactingsupercooled droplets with those of non-supercooled droplets, and discovered the potential of usingsupercooled droplets for three-dimensional printing applications. Furthermore, we have used highspeedimaging to record the actual freezing process of supercooled droplets and infer the spatialand temporal scales involved herein, and shown how the freezing can cause droplets to explode. Wehave also constructed physical models to explain the dynamics of both the freezing process and ofthe explosion process." @default.
- W1813305861 created "2016-06-24" @default.
- W1813305861 creator A5005277071 @default.
- W1813305861 date "2015-01-01" @default.
- W1813305861 modified "2023-09-27" @default.
- W1813305861 title "Dynamics of supercooled droplets:Impacts, jets, explosions and more" @default.
- W1813305861 hasPublicationYear "2015" @default.
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