Nonlinear control of unsteady finite-amplitude perturbations in the Blasius boundary-layer flow [PDF]
, 2013 The present work provides an optimal control strategy, based on the nonlinear Navier–Stokes equations, aimed at hampering the rapid growth of unsteady finite-amplitude perturbations in a Blasius boundary-layer flow.
DE PALMA, Pietro +2 more
core +1 more source
Review of Improving the Performance of Horizontal Axis Wind Turbine Using Passive Flow Control [PDF]
ERU Research JournalControlling rotor blade flow separation and dynamic stall is required to improve the aerodynamic performance of horizontal axis wind turbine (HAWT) blades. Active and passive flow controls are the two basic methods for controlling the flow state. The use
Wafaa Ibrahim
doaj +1 more source
CFD Investigation of a Hybrid Wells Turbine with Passive Flow Control
Energies, 2023 In the past decade, there has been renewed interest in wave energy harvesting utilizing oscillating water columns (OWC), one of the most well-studied wave energy harnessing technologies.
Mohammad Nasim Uddin +2 more
doaj +1 more source
The control of the displacement of a passive particle in a point vortex flow
Journal of Computational Methods in Sciences and Engineering, 2021 This work reports numerical explorations in advection of one passive tracer by point vortices living in the unbounded plane. The main objective is to find the energy-optimal displacement of one passive particle (point vortex with zero circulation) surrounded by N point vortices. The direct formulation of the corresponding control problems is presented.
Balsa, Carlos, Gama, Sílvio M.A.
openaire +2 more sources
Active control of hydrodynamic slug flow [PDF]
, 2013 Multiphase flow is associated with concurrent flow of more than one phase (gas-liquid, liquid-solid, or gas-liquid-solid) in a conduit. The simultaneous flow of these phases in a flow line, may initiate a slug flow in the pipeline. Hydrodynamic slug flow
Inyiama, Fidelis Chidozie
core +7 more sources
Influence of the dimple size and spacing for passive flow control in blended wing body aerodynamics: a CFD investigation [PDF]
Royal Society Open ScienceBlended wing body (BWB) aircraft have re-emerged as a research focus owing to their potential for enhanced aerodynamic efficiency and fuel economy.
Haris Ali +2 more
doaj +1 more source
Passive Transonic Shock Control on Bump Flow for Wing Buffet Suppression
Aerospace, 2023 Since modern transport aircraft cruise at transonic speeds, shock buffet alleviation is one indispensable challenge that civil transport research needs to be addressed.
Davide Di Pasquale, Simon Prince
doaj +1 more source
Thermal performance of a boiling-driven heat spreader using passive flow control
Case Studies in Thermal Engineering, 2023 This study investigates a wickless two-phase heat spreader with boiling heat transfer (boiling-driven heat spreaders) for the thermal management of hot spots with a high heat flux of more than 200 W/cm2. Thermal management studies are performed using two
Hyunmuk Lim +4 more
doaj +1 more source
An improved passive vortex generator model for flow separation control
, 2010 Modeling arrays of passive vortex generators (VGs) pairs located in the fully turbulent boundary layer of a two-dimensional flat plate, generating streamwise counterrotating vortex structures is investigated. Usually, a sound computational fluid dynamics
Johansson, Arne V., +5 more
core +1 more source
The flow structure behind vortex generators embedded in a decelerating turbulent boundary layer [PDF]
, 2009 The objective of the present work is to analyse the behaviour of a turbulent decelerating boundary layer under the effect of both passive and active jets vortex generators (VGs).
Braud, Caroline +3 more
core +1 more source