Results 71 to 80 of about 4,618,854 (237)
A Numerical Study on the Impact of Dynamic Distortions in Total Inlet Pressure on the Stability and Performance of an Aero-Engine's Axial Fan [PDF]
فناوری در مهندسی هوافضاIn preliminary jet engine design, uniform inlet conditions are typically assumed for the compression section, although real-world engines operate under non-uniform inflows that significantly affect the compressor and overall engine performance.
mostafa mahmoodi +3 more
doaj +1 more source
Applied Sciences, 2018 This study aims to assess the dynamic stall of the wind turbine blade undergoing pitch oscillation (PO) and oscillating freestream (OF), respectively. Firstly, a thin-airfoil theoretical analysis was performed to differentiate between these two dynamic ...
Chengyong Zhu, Tongguang Wang
doaj +1 more source
The Dynamics of Static Stall [PDF]
, 2011 The dynamic process of flow separation on a stationary airfoil in a uniform flow was investigated experimentally by means of time-resolved measurements of the velocity field and the airfoil's surface pressure distribution. The unsteady movement of the separation point, the growth of the separated region, and surface pressure fluctuations were examined ...
Mulleners, Karen +3 more
openaire +2 more sources
Constrained predictive control of ship fin stabilizers to prevent dynamic stall
, 2008 In moderate to high sea states, the effectiveness of ship fin stabilizers can severely deteriorate due to nonlinear effects arising from unsteady hydrodynamic characteristics of the fins: dynamic stall.
Goodwin, Graham C., Perez, Tristan
core +1 more source
Energies, 2015 The complex unsteady aerodynamics of vertical axis wind turbines (VAWT) poses significant challenges to the simulation tools. Dynamic stall is one of the phenomena associated with the unsteady conditions for VAWTs, and it is in the focus of the study ...
Eduard Dyachuk, Anders Goude
doaj +1 more source
The effect of leading edge serrations on dynamic stall
, 2012 An investigation into the effects of dynamic stall was carried out on six aerofoil profiles with sinusoidal leading edges having two amplitudes and three different wavelengths.
Borg, Jonathan
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Dynamic stall reattachment revisited
Journal of Fluid MechanicsDynamic stall on aerofoils is an undesirable and potentially dangerous phenomenon. The motto for aerodynamic systems with unsteadily moving wings, such as helicopters or wind turbines, is that prevention beats recovery. In case prevention fails or is not feasible, we need to know when recovery starts, how long it takes, and how we can improve it.
Sahar Rezapour, Karen Mulleners
openaire +2 more sources
On the effects of leading edge vortex generators on an OA209 airfoil
, 2009 Leading edge vortex generators have been found to significantly increase the aerodynamic performance of an airfoil under dynamic stall conditions. However, the principle of operation of these devices is still unclear.
Gardner, Anthony +3 more
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Energy Conversion and Management, 2019 The Scale-Adaptive Simulation (SAS) approach has emerged as an improved unsteady Reynolds-Averaged Navier-Stokes (URANS) formulation to bridge the gap between the less accurate commonly used URANS and the computationally expensive hybrid RANS/LES for ...
A. Rezaeiha, H. Montazeri, B. Blocken
semanticscholar +1 more source
Dynamic stall models applied to deep stall models
, 2023 Wind turbines experience a variety of different operating conditions during their operation. As a result, sections of their blades experience a range of angles of attack.
Jorissen, Martijn (author)
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