Abbreviated Journal Title
Appl. Phys. Lett.
VAPORIZATION; EVAPORATION; STREAM; MODEL; FLOW; Physics, Applied
This letter develops theoretical relationships for equilibrium timescale and temperature scale of a vaporizing droplet in a convective and a radiative environment. The transient temperature normalized by the respective scales exhibits a unified profile for both modes of heating. The analysis allows for the prediction of the required laser flux to show its equivalence in a corresponding heated gas stream. The theoretical equivalence shows good agreement with experiments across a range of droplet sizes. Simple experiments can be conducted in a levitator to extrapolate information in realistic convective environments like combustion and spray drying.
Applied Physics Letters
Saha, Abhishek; Basu, Saptarshi; and Kumar, Ranganathan, "Scaling analysis: Equivalence of convective and radiative heating of levitated droplet" (2012). Faculty Bibliography 2010s. 3227.