Experimental Study of Various Modes of Electrosprays for Different Liquids

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Razavi, Maryam | 2016

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Type of Document: M.Sc. Thesis
Language: Farsi
Document No: 48054 (45)
University: Sharif University of Technology
Department: Aerospace Engineering
Advisor(s): Morad, Mohammad Reza
Abstract:
In the present study liquid thermophysical properties in electrospray has been studied. Other parameters such as electrical configuration do not change during this study. For this purpose Alcoholic fuels have been chosen because of their high energy density and their polarity that make them suitable for electrospraying. Electrical conductivity, surface tension, viscosity, density and permittivity are the most effective liquid properties in the electrospraying. The visualization method used for this study is shadowgraphy and light scattering method. In this study the range of flow rate and voltage is acquired for each operational mode and Q-V diagram has been obtained for all liquids (methanol, ethanol, propanol, and butanol). Because of producing fine and mono disperse droplets in cone-jet mode, this mode has been investigated more accurate. The range of flow rate and voltage and structure of this stable mode has been studied. Break up mechanism, jet diameter, cone-jet morphology and spray characteristics have quantified. For different liquids these subjects are compared
Keywords:
Electrospray ; Jet Diameter ; Cone-Jet ; Spray Characteristics ; Thermophysical Properties

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