Ludmil Borisov Drenchev, Professor, PhD, DSc. Master of Science, Atomic Physics, Sofia University St. K. Ohridski (1978). Doctor, Institute of Metal Science, BAS (1994). Doctor of Science, Institute of Metal Science, BAS (2008). Director of Institute of Metal Science, Equipment and Technology with Hydro and Aerodynamics Center “Acad. A. Balevski” (2014-present). Professor at Institute of Metal Science, Equipment and Technology with Hydro- and Aerodynamics Center “Acad. A. Balevski”, Sofia, Bulgaria, Department of Mathematical Modeling (2011-present). Main research area and subareas: Mathematical modeling and numerical simulation in casting; numerical methods, inverse problems, differential equations; new metallic materials' design; metal-matrix composites; control and optimization of liquid-processing methods.