Yong-Du Jun joined the Faculty of Mechanical and Automotive Engineering at Kongju National University, Korea, in 1997, after receiving his doctoral degree in aerospace engineering from the University of Cincinnati. Prior to joining the faculty position at KNU, he worked in the field of propulsion system, engine aerodynamics, and turbomachinery erosion with CFD. His research at KNU focused on waste heat recovery, fluidized bed heat exchanger, heat transfer enhancement, and fouling reduction while longtime advising senior capstone design projects related to innovative utilization of renewables. He has a strong interest in the study of “vacuum bubbling” and the potential to minimize unnecessary energy use. Dr. Jun served as the chairman of the Division of Mechanical and Automotive Engineering and the dean of Academic Affairs of the Kongju National University.