Abstract The issues produced withinside the traditional windmills instigate development of vortex bladeless windmills. Vortex Bladeless is a caused vibrations resonant wind generator. It harnesses strength from phenomenon vorticity referred to as Shedding. Basically, era consists cylinder regular vertically with an elastic rod. oscillates on range, which then generates electricity through trade...

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 ...

Abstract Vortex beams carrying orbital angular momentum have important applications in high dimensional optical information processing, manipulations of tiny particles, super-resolution imaging and so on. Among various components, metasurface represents an ideal platform for realizing vortex with multiple functionalities due to its strong ability manipulating the phase, polarization amplitude l...

Metasurfaces supply a planar approach for flexible wavefront manipulation, thus facilitating the integration and minimization of optical elements, especially in terahertz (THz) range. High efficient THz metadevices are highly pursued at present. Here, we propose bilayer design to improve efficiency metadevice. Two silicon pillar arrays with distinguishing geometries integrated on single substra...

This work is focused on reduction of swirling in cases from hydraulic machinery and, thus, mitigation instabilities associated with flow. We study this problem analytically using the torque integral equation, numerically computational fluid dynamics (CFD) simulations, and experimentally a swirl generator that generates flow approximating draft tube hydro turbine operating at part load, featurin...