Saad Ragab is a professor in the Department of Biomedical Engineering & Mechanics at Virginia Tech University in Blacksburg, Virginia, whose fields of interest and research include multiphase fluid flow, computational fluid mechanics, hydrodynamic stability, gas dynamics and compressible flow. Dr. Ragab received his B.S. and M.S. degrees from the University of Cairo, and earned his Ph.D. in 1979 from Virginia Tech University. He has received several awards for excellence in teaching, and certificates of recognition from the A{S and ASME. Hassan E. Fayed received his B.S. and M.S. degrees from Zagazig University in Egypt, and his Ph.D. from Virginia Tech University in 2013. Dr. Hassan's specialties include solar thermal engineering, transport in porous media, as well as bubbles and drops coalescence and breakup.