Title

Simulating The Evaporation Of Pinned Water Microdroplets With Implementation Of A Surface Concentration Distribution

Abstract

Numerical and experimental investigations of water microdroplet evaporation on polymer substrates are reported. The study is focused on validating numerical models with experimental data. The experimentally measured evaporation rates are compared to the predictions of a commonly reported model based on a solution of the Laplace equation, providing the local evaporation flux along the droplets liquid-vapor interface. The model consistently overpredicts the evaporation rate, which is presumable due to the models constant saturated vapor concentration along the droplets liquid-vapor interface. In result, a modified version of the model is implemented to account for variations in temperature along the droplets liquid-vapor interface. A vapor concentration distribution is then imposed using this temperature distribution, increasing the accuracy in predicted evaporation rate by 7.7% and 9.9% for heated polymer substrates at Ts= 50°C and 65°C, respectively.

Publication Date

9-4-2014

Publication Title

Thermomechanical Phenomena in Electronic Systems -Proceedings of the Intersociety Conference

Number of Pages

1222-1227

Document Type

Article; Proceedings Paper

Personal Identifier

scopus

DOI Link

https://doi.org/10.1109/ITHERM.2014.6892420

Socpus ID

84907697930 (Scopus)

Source API URL

https://api.elsevier.com/content/abstract/scopus_id/84907697930

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