Optical Measurement of Droplet Evaporation Rates
The evaporation of droplets suspended in a carrier gas is an important physical process with many technical applications such as spray combustion. Measuring evaporation rates of liquid particles with different composition and physical properties can show unknown details of the liquid material. The gasdynamic heating of the gas/droplet mixture by a shock wave can be used to initiate the process of droplet evaporation. Using laser light scattering it is possible to measure the time dependent decrease in the droplet sizes. The resulting scattered light fluxes measured under different fixed angles can be interpreted by applying Mie-theory.
KeywordsShock Wave Evaporation Rate Shock Tube Particle Number Density Size Distribution Function
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