What is it about?
When a droplet is put in the environment under low pressure, it will evaporate faster than usual. We have investigated the effect of pressure, droplet initial temperature and droplet size on the evolution of droplet temperature and evaporating rate. We have also extracted the flow information and the vapor concentration distribution from a simulation.
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Why is it important?
The usage of the material with low thermal conductivity (aerogel) reduces the number of nucleate sites and maintains the droplet flash evaporation than the pendant droplet. The revised diffusion coefficient can be used to simulate the fast droplet evaporation under the framework of diffusion-driven evaporation.
Perspectives
I hope this article improves the way of studying the flash evaporation of sessile droplets from the perspective of both experimental and numerical methods.
Yuansi Tian
University of Science and Technology of China
Read the Original
This page is a summary of: Experimental and numerical investigations on flash evaporation of a sessile droplet under reduced pressure, Physics of Fluids, November 2023, American Institute of Physics,
DOI: 10.1063/5.0178447.
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