Nine surfaces of interest were defined within the CFD model, as indicated in Table 2, and the
modelled particle concentration was determined on the surfaces for each scenario in Table 1. These
surfaces were based on those monitored during the observation study outlined below.
CFD simulations were carried out on a University of Leeds’ high performance facility (ARC1 with
672 AMD cores and 128GB memory) and were considered converged when residuals for continuity
and all other variables dropped below 1x10-4
, and remained below this for at least 100 iterations. All
variables are scaled with respect to the sum of the errors in all cells. In addition continuity is scaled
with respect to the largest absolute value within the first five iterations and so can be considered Accepted
normalised (Fluent 2010)