Jie (Jay) Zhang is an engineer with expertise in modeling environmental flows in engineered/natural systems. He earned PhD degree in Civil Engineering (interdisciplinary concentration) at the University of South Florida, Tampa. FL. He is a pioneer in investigating water and wastewater treatment problems from the perspective of fluid mechanics; He combined computational fluid dynamics (CFD) with chemical reaction kinetics models and successfully applied it to evaluating technical performance and economic/environmental sustainability of water treatment facilities. He is interested in understanding complex flows in ecological systems as well. He is also a leader in promoting CFD in the community of civil and environmental engineers; He established an ASCE EWRI task committee on computational fluid dynamics and organized technical sessions and workshops on CFD applications in water engineering at national/international conferences.