Vortex generators are devices that modify the wind behavior near surface of turbine blades. Their use allows boundary layer shedding transition zone to be varied. Bio-inspired design has been used improve efficiency aerodynamic and hydrodynamic systems by creating shapes present in animals plants. In this work, an experimental methodology is proposed study effect bio-inspired vortex their on st...

Vortex generators are used in aircraft wings and wind turbine blades. These devices allow them to maintain a stable turbulent behavior the wake. generators, or VGs, improve transition from laminar boundary layer regime, avoiding abrupt shedding. HAWT turbines have high rotational velocity. Currently, being redesigned with fixed vortex achieving higher energy production. This paper presents tunn...

Abstract To understand the micro-vortex structure of Microjet Vortex Generators, a plate with pitched and skewed jet holes was established. Simulations using SST-DDES method based on WENO scheme were conducted to analyse effect pressure, hole interval incoming boundary layer thickness flow structure. The pitch angle skew are 55 degrees 45 respectively. total pressure microjets ranges from 2.5 3...

We deal with a multidimensional Markovian backward stochastic differential equation driven by Poisson random measure and independent Brownian motion (BSDEJ for short). As first result, we prove, under the Lipschitz condition, that BSDEJ’s adapted solution can be represented in terms of given Markov process some deterministic functions. Then, means this representation, show existence results suc...

In the present paper an active control mechanism for the control of laminar separation bubbles on airfoils is investigated by means of direct numerical simulation and linear stability theory. Boundary layer instabilities excited by periodic oscillations are utilized to control the size and length of the separation bubble and to make it finally disappear when desired. Unlike traditional vortex g...