Dr. M. S. Youssef is the secretary of College Accreditation Steering Committee, College of Engineering, Taif University, Saudi Arabia since 2010 until now. He is also the chairman of Mechanical Engineering Program Committee, College of Engineering, Taif University, since 2010 until now. Dr. Youssef graduated in Mech. Eng. Dept., Assiut University, Egypt in 1983 and worked as Demonstrator and got his M. Sc. in 1989 from the same department.  He got his Ph. D. from Nagoya Institute of Technology, Japan in 1994. Since 1995 He rejoined with Mech. Eng. Dept. of Assiut University as an Assistant Professor and promoted to Associate Professor in 2003. Dr. Youssef is currently on sabbatical leave of Assiut University. His research interest areas are turbulence modeling and computational fluid dynamics, development of numerical modeling techniques for the treatment of turbulent flows, liquid atomization and spray systems, and Nanofluids and their Modeling and Applications.