AAAR 31st Annual Conference
October 8-12, 2012
Hyatt Regency Minneapolis
Minneapolis, Minnesota, USA
Abstract View
Modeling Deposition of Cerium-Containing Diesel Particles Inside a Wind Tunnel
ZHEMING TONG, Thomas Peters, Robert Willis, Kathleen Fahey, Havala Pye, Max Zhang, Cornell University, Ithaca, NY, USA
Abstract Number: 268 Working Group: Health Related Aerosols
Abstract The cerium-based fuel additive shows promise in PM emission reductions, but it also raises the concern of near-road cerium exposure. This presentation describes our modeling study of deposition of cerium-containing diesel particles inside a well-characterized wind tunnel using the Comprehensive Turbulent Aerosol Dynamics and Gas Chemistry (CTAG) model. The data was collected from an experiment conducted at University of Iowa and USEPA. The turbulent flow field is resolved by Large-Eddy Simulation (LES) model, and we apply several dry deposition models to compare the modeling results against particle deposition analyzed from TEM grids. This study helps examine our capability in capturing the dynamics of cerium-containing particles in the atmosphere.