Mario F. Trujillo is a professor in the Department of Mechanical Engineering at the University of Wisconsin-Madison and is a member of the Engine Research Center. He currently serves as Director of the Decarbonized-Engine Research Consortium (https://derc.wisc.edu/) and as associate editor for the International Journal of Multiphase Flows and the International Journal of Engine Research. He is a former Department of Energy (DoE) Computational Science Graduate fellow and worked at the Los Alamos National Laboratory (T-3 Fluid Dynamics) developing multiphase flow codes for high-pressure conditions. Prior to his appointment at the UW-Madison, he was a research faculty in the Computational Mechanics Division of the Applied Research Laboratory at the Pennsylvania State University. His current interests are in (a) development of a fundamental understanding of the hydrodynamic breakup process in liquid sprays via highly resolved Volume-of-Fluid simulations, mean flow linear stability analysis, and data science techniques, (b) the construction of innovative approaches for spray modeling at reduced computational cost, (c) the application of data science techniques to quantify spray behavior, and (d) general multiphase flows.