Research

Research Interests:

• Evaporation and Boiling

• Dynamics of Multiphase Flows

• Collision dynamics of drops

• Computational Fluid Dynamics

Journal(s):

• A. K. Pal, K. C. Sahu, S. De, and G. Biswas, "Collision of two drops moving in the same direction," Physics of Fluids, 36, 012122 (2024). https://doi.org/10.1063/5.0189168

• A. K. Pal, K. C. Sahu, and G. Biswas, "Modeling binary collision of evaporating drops," International Journal of Heat and Mass Transfer, 221, 125048 (2024). doi.org/10.1016/j.ijheatmasstransfer.2023.125048 

• A .K. Pal and G. Biswas, "Accurate Prediction of Transport Coefficients of an Evaporating Droplet," ASME J. Heat Mass Trans. 145(4), 041602 (2023). doi.org/10.1115/1.4056542 

Conference(s):

• A. K. Pal and G. Biswas, "Head-on Collision of Two Evaporating Drops in Coalescence Regime," 14th Asian Computational Fluid Dynamics Conference (ACFD 2023), Bengaluru, India.

• A. Pal and G. Biswas, "Evaporation of a Pendant Drop in a Stream of Hot Air," 13th Asian Computational Fluid Dynamics (ACFD-2022), Jeju, Korea.

Ongoing Research:

Numerical study of evaporation of two drops interacting with each other is conducted using an in house solver based on a coupled level set and volume of fluid (CLSVOF) interface capturing technique. When two drops collide with each other, their outcome may be different based on the pertinent dimensionless parameters such as Weber number and Ohnesorge number. The possible outcomes of the drop collision are: (a) Bouncing, (b) Fast Coalescence, (c) Reflexive Separation, (d) Stretching Separation. We have performed numerical simulation for different regimes of the dimensionless parameters to obtain the above mentioned outcomes of the drop collision. We are trying to answer the questions like how the outcomes of these collision of the drops are affected due to evaporation and vice versa. Following gallery shows few of the results obtained from the ongoing research on evaporation of a single drop: