V1. 5 Equation for ns changed(Removed time) Changes are bolded Before Computational Smooth Dynamics(CFD) originated, theoretical studies on high swirling confined turbulent flows can only just be validated by doing experimental studies. These experimental studies require long leading time and high cost. Now, with the aid of CFD, researchers have the ability to study these complicated moves in a much shorter time and with a lower cost incurred. Many experimental..