Introducing a fluid microjet into the boundary layer to increase momentum and hence delay separation is method for actively controlling flow region. The present work numerically analyzed control of bubble behind ramp. For this purpose, we first verified steady-state numerical results (without jet) over ramp against reliable experimental studies from literature. Next, effects introducing were al...

The problem of flow control under conditions a turbulent boundary layer at transonic and supersonic free-stream velocities is considered. Such flows are integral components the flight process exert significant effects on around both aerodynamic object as whole its individual elements. present paper describes investigations combined device (“plasma wedge”), which wedge mounted along with energy ...

In many industrial applications, a permeable mesh (porous screen) is used to control the unsteady (most commonly vortex) flows. Vortex flows are known display intriguing behavior while propagating through porous screens. This numerical study aims investigate effects of physical properties such as porosity, Reynolds number, inlet flow dimension, and distance screen on behavior. The simulation mo...

this paper is about experimental results for partial reduction of vortex at vertical pipe intakes. one of the easiest and practical ways of reducing vortex effect is to use anti-vortex plates or baffles. these plates can be used to avoid the vortex completely or partially. this paper will concentrate on the latter case. rectangular plates with different dimensions have been placed at different ...

Flow separation limits the efficiency of low-pressure turbines (LPTs) in aircraft engines. Experiments with vortex generator jets (VGJs), conducted in AFRL's low-speed cascade at Wright-Patterson AFB, have demonstrated dramatic reductions in separation losses. The critical science that will enable this design innovation to reach its potential is a comprehensive understanding of the effect of VG...

Surfaces plasmon polaritons carrying orbital angular momentum (OAM), known as plasmonic vortex, hold potential applications for on-chip information multiplexing. However, a traditional vortex lens was usually designed monochromatic incident light and encountered challenges in generating multiple vortices. Here, we demonstrated wavelength-tunable generator that ameliorates these limits, relying ...