The Ranque–Hilsch vortex tube (RHVT) is a device currently used to generate local cooling. In general, the fluid that is injected into the RHVT is a single-phase gas. In this study, however, we have added a dispersed phase (water droplets) to the gas (nitrogen). By means of phase Doppler particle analysis, three velocity components, their higher order moments, and sizes of droplets were measure...

Optical beams carrying orbital angular momentum (OAM) can find tremendous applications in several fields. In order to apply these particular beams in photonic integrated devices innovative optical elements have been proposed. Here we are interested in the generation of OAM-carrying beams at the nanoscale level. We design and experimentally demonstrate a plasmonic optical vortex emitter, based o...

Optical complex fields have attracted increasing interests because of the novel effects and phenomena arising from the spatially inhomogeneous state of polarizations and optical singularities of the light beam. In this work, we propose a spiral blade plasmonic vortex lens (SBPVL) that offers unique opportunities to manipulate these novel fields. The strong interaction between the SBPVL and the ...

Efficient and safe heparin anticoagulation has remained a problem for continuous renal replacement therapies and intermittent hemodialysis for patients with acute renal failure. To make heparin therapy safer for the patient with acute renal failure at high risk of bleeding, we have proposed regional heparinization of the circuit via an immobilized heparinase I filter. This study tested a device...

The Data Vortex photonic packet switching architecture is designed to be a low-latency topology with minimal node complexity and a high degree of scalability [1,2]. The nodes from which this system is assembled require widebandwidth switching devices with very fast transitioning and minimal signal degradation. Semiconductor optical amplifiers (SOAs) have been selected as the most promising acti...

Vortex generators (VGs) are a passive method by which to alleviate boundary layer separation (BLS). The device-induced streamwise vortices propagate downstream. There is then lift-off from the surface and vortex decays. effectiveness of VGs depends on their geometrical configuration, spacing, flow characteristics. In high-speed regime, must be properly positioned upstream BLS region. Measuremen...

Uveal effusion syndrome (UES) was reported by Schepens and Brockhurst in 1963,1 and later described as a nanophthalmic disorderwith a scleral abnormality.2 Gass3 described idiopathicUES and hypothesized that the causewas a congenital anomalyof the sclera and vortex veins that was related to aging, hormonal changes, or impairment of the permeabilityof the sclera.Using histologicalmethods,Trelsta...

Vortex tube is a simple energy separation device, also known as Ranque tube or Hilsch tube, which can separate a high-pressure stream into two different hot and cold streams. Since its simple structure and unique temperature separation characteristics, vortex tube has been widely used in various industries. In recent years, with the in-depth study of the vortex tube, it has been found that comp...

Miniflaps at the trailing edges of airfoils (e.g., Gurney flaps or divergent trailing edges) change the Kutta condition and thus produce higher lift. Unfortunately, however, the drag is also increased due to the flow separation downstream of this particular type of trailing edge. Therefore, the trade-off between beneficial and detrimental effects is considered in this paper. Various aspects of ...

The manipulation of topological fluid flow to fabricate spicular C60 coated polystyrene beads under shear stress in the vortex fluidic device (VFD).