2.4. Numerical method
To predict the reaction phenomena of CPOM, the commercial
software ANSYS FLUENT v12 was utilized to solve the governing
equations along with the boundary conditions. The finite-volume
method in association with the first order upwind scheme was
used to discretize the governing equations, and the computational
procedure followed the SIMPLE algorithm [34]. To reduce the
numerical truncation errors, an orthogonal grid system was
employed. The grid numbers of 120 and 33 uniformly distributed
along the x- and y-axes was constructed, as shown in Fig. 1b. The
test of the grid system suggested that it was able to satisfy the
requirement of grid independence [35]. The validations of
numerical method and chemical kinetics have been carried out