Title
Weighted Flow Algorithms (WFA) for stochastic particle coagulation
Abstract
Stochastic particle-resolved methods are a useful way to compute the time evolution of the multi-dimensional size distribution of atmospheric aerosol particles. An effective approach to improve the efficiency of such models is the use of weighted computational particles. Here we introduce particle weighting functions that are power laws in particle size to the recently-developed particle-resolved model PartMC-MOSAIC and present the mathematical formalism of these Weighted Flow Algorithms (WFA) for particle coagulation and growth. We apply this to an urban plume scenario that simulates a particle population undergoing emission of different particle types, dilution, coagulation and aerosol chemistry along a Lagrangian trajectory. We quantify the performance of the Weighted Flow Algorithm for number and mass-based quantities of relevance for atmospheric sciences applications.
Year
DOI
Venue
2011
10.1016/j.jcp.2011.07.027
J. Comput. Physics
Keywords
Field
DocType
particle size,weighted flow algorithm,atmospheric aerosol particle,weighted computational particle,weighted flow algorithms,particle coagulation,stochastic particle coagulation,particle population,different particle type,aerosol chemistry,particle weighting function,weight function,smoluchowski equation,atmospheric science,power law,stochastic simulation
Statistical physics,Population,Mathematical optimization,Weighting,Aerosol,Algorithm,Smoluchowski coagulation equation,Particle size,Power law,Particle,Trajectory,Mathematics
Journal
Volume
Issue
ISSN
230
23
0021-9991
Citations 
PageRank 
References 
4
0.53
6
Authors
3
Name
Order
Citations
PageRank
R. E. L. DeVille140.53
N. Riemer240.87
Matthew West3646.81