This study focused on reducing the drag force of a road vehicle using passive flow control. The aerodynamic performance model was improved by applying originally designed vortex generators. drawing data and generators were in Solid Works® program. measurements visualizations performed Fluent® program with Reynolds numbers range 2.8×105-6.6×105. Accordingly, CD value base decreased 6.22%, 4.59%,...

To discover the nonlinear characteristics of pipe flow, we simulated the flow as a sum of many vortex rings. As a first step, we investigated the nonlinear interaction among a maximum of three vortex rings. The pipe wall was replaced by many bound vortices. A free vortex ring moves right or left according to the radius, and that of a particular radius keeps the initial position. The energy of a...

Due to the background in the mixed compression engine inlets, the Shock wave/ Turbulent Boundary Layer Interaction (STBLI) problem has been one of the concerns of the aerodynamic industry. Shock-induced separation and the corresponding interaction make the flow losing its quality and reduce inlet total pressure recovery. Various flow-control methods have been tried and investigated by lots of r...

One of the solutions of the Helmholtz equation is the vortex beams. In the recent decades, production and applications of these types of beams have found serious attentions. Determination of the vortex beam topological charge and its sign are very important issues. Odd number of reflections of the vortex beam changes its vorticity. In this paper, we have used a q-plate to generate a vortex beam...

We find chiral non-Abelian vortices having windings only in one of the diquark condensations left-handed and right-handed quarks color-flavor locked phase dense QCD. They are minimum carrying half color magnetic fluxes those semi-superfluid (color flux tubes) 1/6 quantized superfluid circulations Abelian vortices. These carry ${\mathbb C}P^2$ orientational moduli internal space corresponding to...