Experimental study on evaporation of droplets in microgravity and in the presence of electric field

Abstract One of the key limiting factors in evaporation rate sessile droplets is evacuation generated vapour away from liquid-air interface. In absence convection, main driving mechanism diffusivity: as mass diffusion quite a slow process, this generally leads to small rates. For liquids with heavy vapour, natural convection induced by density gradients cloud can increase significantly on ground. Nevertheless, effect absent space and one therefore has find alternative mechanisms accelerate evaporation. The electric field may induce some influence This work describes experiments regarding microgravity conditions performed during sounding rocket campaign June 2019. Microgravity allows exclude contribution that otherwise prevails other effects. produces clear change concentration distribution surrounding droplet an respect case no field. Moreover, field, Marangoni liquid too, preventing pure diffusive behaviour.