1- Volume of fluid (VOF)

The VOF formulation relies on the fact that two or more fluids. For each phase considered in the model a variable is introduced as the volume fraction of the phase in the computational cell. In each of the control volumes, the volume fractions of all phases sum up to unity. 

2- Level set

The level set method (Sethian, 1999) is a method for implicit description of moving fronts. The basic idea is that the front location is given as the zero level set of an auxiliary field defined over the domain of interest. 

Couple of level set and VoF (CLSVOF)

S. Jafari, A. Kebriaee, A Comprehensive Predictive Model to Predict Droplets Size Distribution in Pressure Swirl Atomizer"," International Conference of ILASS, Valencia, Spain, September,2017.
http://dx.doi.org/10.4995/ILASS2017.2017.4845

S. Jafari, A. Kebriaee, Study of Nonlinear Hydrodynamic instability of liquid Films," 24th International Conference on Mechanical Engineering, (Iranian Society of Mechanical Engineering), Yazd, Iran, APRIL 2016.
https://civilica.com/doc/943529/

S. Jafari, A. Kebriaee, Study of Nonlinear Hydrodynamic instability of 3-D Liquid  Jet," 24th International Conference on Mechanical Engineering, (Iranian Society of  Mechanical Engineering), Yazd, Iran, APRIL 2016.
https://civilica.com/doc/943222/

S. Jafari, A. Kebriaee, Study of Nonlinear Hydrodynamic instability by use of CLSVOF Method," 9th International Conference on Internal Combustion Engines and oil, (ICICE O9), Tehran, Iran, February 2015.
https://civilica.com/doc/691404/