  A dry deposition model suitable for use in the moment method has been
developed. Contributions from five main processes driving the deposition -
Brownian diffusion, interception, impaction, turbulent impaction, and
sedimentation - are included in the model. The deposition model was employed in
the moment method solver implemented in the OpenFOAM framework. Applicability
of the developed expression and the moment method solver was tested on two
example problems of particle dispersion in the presence of a vegetation on
small scales: a flow through a tree patch in 2D and a flow through a hedgerow
in 3D. Comparison with the sectional method showed that the moment method using
the developed deposition model is able to reproduce the shape of the particle
size distribution well. The relative difference in terms of the third moment of
the distribution was below 10\% in both tested cases, and decreased away from
the vegetation. Main source of this difference is a known overprediction of the
impaction efficiency. When tested on the 3D test case, the moment method
achieved approximately eightfold acceleration compared to the sectional method
using 41 bins.
