Among all the turbulent models, the κ-ε model was
selected in this work because it is the most widely used and
validated one in terms of consistency and reliability [8]-[9].
There are three types of κ-ε model, namely the Standard κ-ε
model, Renormalization Group (RNG) κ-ε model and
Realizable κ-ε model. The major differences between these
models are the methods in calculating the turbulent viscosity,
turbulent Prandtl numbers and the generation and destruction
terms in the ε equation.