Numerical model for sessile drop evaporation on heated substrate under microgravity

Although sessile drops have simple geometries, the physics involved in their evaporation process is complex owing to numerous intricate interactions and fluid nature. An accurate quantitative model of will enable increased understanding control over process. In this study, a numerical developed for drop on heated substrate under microgravity based results rocket parabolic experiments understand ’internal dynamics drop. The quantitatively validated through experiments. Subsequently, correlation between temperature rate suggested an ethanol flow motion analyzed by conducting three-dimensional resolved computations evaporating This provides insights into Marangoni effect occurrence secondary instabilities. For first time, fine effects instabilities are captured. Our valid absence convection vapor phase, producing interface fully saturated vapor, which typically exists conditions.