Counter-rotating vortex generators (VGs) are typically employed to delay airflow separation on wind turbine blades. Large-size blades equipped with small size VGs make the computational fluid dynamics (CFD) researches require a great deal of resources. Parametric models can effectively improve numerical research efficiency VGs. In order accuracy such parametric models, this study proposed serie...

Jabiru J430 aircraft is a type of light produced by the manufacturer with four passenger seats which has length 6550 mm and height 2200 high wing additional winglets. This study aims to determine effect installing vortex generator on upper surface aerodynamic characteristics, especially at critical angle conditions. As it known that functions produce in air flow so can delay occurrence separati...

Ide dasar yang melandasi penelitian ini adalah pemanfaatan gas buang engine pesawat digunakan untuk sistem anti icing, sehingga di dapatkan sebuah mekanisme operasional efektif mengatasi icing terjadi pada karburator piston engine. Sistem dibuat meliputi shell dan tube diberikan vortex generator berupa buffle dimodifikasi, adapun variasi dari yaitu line buffle, with circular hole, square hole. ...

The present study involves a novel computational technique, regarding simultaneous use of the pseudo particle method, Poisson integral method and a special-purpose computer originally designed for molecular dynamics simulations (MDGRAPE-3). In the present calculations, the dynamics of two colliding vortex rings have been studied using the vortex method. The present acceleration technique allows...

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 ...

In this paper, we show that improved air circulation above a heat sink is possible using thin winglet-type vortex generators that can be passively retrofitted to an existing unit. By mounting these vortex generators on the leading edge of heat sink fins, pairs of counterrotating vortices are induced within the interfin spacing. The vortices disturb the boundary layers and serve to mix the air i...

Turbulence remains one of the last unsolved problems classical physics. Here, authors present insights from nucleation and evolution simpler quantum turbulence. They generate turbulence mechanically, image dynamics nondestructively through illumination thermal quasiparticles. At low temperatures, ballistic quasiparticles are Andreev-reflected by vortex flow fields, producing a shadow which show...

Abstract In this work, an experimental study on new series connection of two Ranque-Hilsch vortex tubes with generator materials, potential in seawater desalination was implemented, combined modification has not been studied open literature. Polycarbonate and Polyamide-Nylon 6 were tested compared as materials that enhance the heat transfer between air streams inside tube. Moreover, using prehe...