Bourns Hall

Colloquium

Jing Yuan Doctoral candidate, Mechanical Engineering, UCR Experimental and Theoretical Investigations on Dispersion in Urban Environments Abstract There is a critical need for dispersion tools that provide reliable modeling results to support assessment of potential health impacts from exposures to air toxics from urban sources, such as gasoline stations, dry cleaners, automotive repair facilities, and small industries, where human receptors typically range from a few meters to several kilometers. In this presentation, an overview of the theoretical and experimental studies of flow, turbulence and contaminant transport in such areas will be given. These studies involved a series of field tracer experiments reflecting increasing levels of physical complexity. Theoretical concepts and numerical simulations of the dispersion in urban area will be presented, and the results to understand and predict urban air quality will be discussed. Biosketch Jing Yuan is a Ph.D. Candidate in the Department of Mechanical Engineering at the University of California-Riverside. His research focuses on experimental and theoretical investigations on dispersion in urban environments. He obtained his M.S. degree in Environmental Engineering from Tsinghua University in China and B.S. in Atmospheric Physics and Environment from Nanjing Institute of Meteorology in China, respectively. He won the First Place in the Doctoral Student Paper/Poster Competition at 2003 Air & Waste Management Association's Annual Conference & Exhibition. Friday, January 14, 2005 Bourns Hall A265 3:10 p.m. - 4:00 p.m. (Refreshments will be served at 3:00 p.m.)