Evaluation of Two Numerical Algorithms in Simulating Particle Condensational Growth and Gas/Particle MassTransfer

Saturday, March 18, 2000 - 10:00am - 10:25am
Keller 3-180
Yang Zhang (Atmospheric and Evironmental Research, Inc.)
Joint work with Christian Seigneur.

Different numerical algorithms have been used in air quality PM models to minimize numerical diffusion when simulating aerosol dynamic processes with a sectional representation of particle size. We evaluated two numerical algorithms (the Bott and the spline interpolation algorithms) that are used in 3-D PM models to simulate particle condensational growth and gas/particle mass transfer. For simulation of condensational growth, the Bott algorithm causes some upstream numerical diffusion for the fine particle size range (with diameter