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Leading-Edge Flow Structure of a Dynamically Pitching NACA 0012 Airfoil

B. J. Pruski, R. D. W. Bowersox
2013 AIAA Journal  
Nicks low-speed wind-tunnel staff at Texas A&M University for providing assistance with the installation of the dynamic stall apparatus and operation of the wind tunnel.  ...  The leading edge flow structure of the NACA 0012 airfoil is experimentally investigated under dynamic stall conditions (M = 0.1; α = 16.7 • , 22.4 • ; Re c = 1× 10 6 ) using planar particle image velocimetry  ...  The laser beam entered through the ceiling of the wind-tunnel using laser light optics.  ... 
doi:10.2514/1.j051673 fatcat:ueltcee2eva65m2gecvsruu4ze

Scientific Program

2014 Procedia IUTAM  
, Japan Interaction of a wall jet with a wake flow-vortex statistics FM15-029 Arindam Singha, Md Abdullah Al Faruque * , Ram Balachandar, USA Numerical study of a vortex ring impacting on a circular cylinder  ...  unsteady flows past oscillating airfoils at low Reynolds numbers FM10-027 Dan Mateescu * , Olivier Scholz, Chao Wang, Canada Wind turbine load performance using iterative learning control FM17-001 Owen  ...  Thickness-shear vibrations of rectangular plates with free edges by the extended kantorovich method FS07-019 Ji  ... 
doi:10.1016/j.piutam.2014.01.011 fatcat:osy4egnuufdophopfpj75e24jm

Residual Dynamic Mode Decomposition: Robust and verified Koopmanism [article]

Matthew J. Colbrook, Lorna J. Ayton, Máté Szőke
2022 arXiv   pre-print
Examples include: vortex shedding behind a cylinder; hot-wire data acquired in a turbulent boundary layer; particle image velocimetry data focusing on a wall-jet flow; and acoustic pressure signals of  ...  Challenges include spurious (unphysical) modes, and dealing with continuous spectra, both of which occur regularly in turbulent flows.  ...  Experimental setup Experiments using TR-PIV are performed at the Wall Jet Wind Tunnel of Virginia Tech as schematically shown in Fig. 13 .  ... 
arXiv:2205.09779v1 fatcat:g6kh5kdl3bcevp5dm25oj3syy4

Uncertainty quantification in particle image velocimetry

Andrea Sciacchitano
2019 Measurement science and technology  
The technique yields quantitative visualizations of the instantaneous flow patterns, which are typically used to support the development of phenomenological models for complex flows or for validation of  ...  The findings of a-priori PIV-UQ based on theoretical modelling of the measurement chain as well as on numerical or experimental assessments are discussed.  ...  This work was conducted as part of the Veni project 15854 'Deploying Uncertainty Quantification in Particle Image Velocimetry', funded by the Dutch Research Organization NWO domain Applied and Engineering  ... 
doi:10.1088/1361-6501/ab1db8 fatcat:rapmgkgykzazzfok34kqby4vwy

Particle image velocimetry around a wall-mounted hemisphere in supersonic flow

Mario Rivero
2020
These quantities indicate a significantly turbulent flow in the wake in the separated shear layer and show evidence of three-dimensional flow structures both upstream and downstream of the hemisphere.  ...  wind tunnel.  ...  Using time resolved particle image velocimetry, TR-PIV, they observed a noticeable oscillatory motion of the shear layer.  ... 
doi:10.7282/t3-p77m-t954 fatcat:5ms2aogdhfbnbhxnepjykh7hom

Issue 1-December 2009-Optical Diagnostics of Flows: an Introduction

Emmanuel Rosencher
unpublished
The authors thank Eric coustols from Onera in Toulouse for the coordination of wake vortex research at Onera, and frederic Moens from Onera in Meudon for the analysis of the PIv measurements.  ...  Thanks also to the fIDElIO project partners: ElOP (Israel, coordinator, laser integration), Thales R&T (france, laser research), INEsc Porto (Portugal, laser research), IPHT (Denmark, fiber research and  ...  The picture in Figure 2 shows the wake flow around a circular cylinder in a hydrodynamic tunnel.  ... 
fatcat:nap7iqlf75glpjfltar32upf3i

Experimental study of the boundary layer separation and transition processes under turbine-like conditions by means of advanced post-processing techniques [article]

MATTEO DELLACASAGRANDE
2019
The wind Tunnel The wind tunnel installed in the laboratory of Aerodynamics and Turbomachinery of the University of Genova is an open-circuit low-speed wind tunnel.  ...  Note, that even though a small number of modes is typically needed to well reproduce simple or at least slightly complex flows, such as the wake of a circular cylinder or the mixing layer in axisymmetric  ... 
doi:10.15167/dellacasagrande-matteo_phd2019-05-21 fatcat:przneljc4bh6doxhyv4iuw576i

Active separation control by multiple cooperative actuation [article]

Markus Blechschmidt, Technische Universität Berlin, Technische Universität Berlin, Wolfgang Nitsche
2017
A mass flow reduction up to 21% can be achieved by using a non-optimized cooperative actuation system.  ...  As shown by the analysis of PIV measurements in conjunction with pressure measurements, the fluidic rows can be actuated such that the flow tructures (vortices) they produce are strengthened and stabilized  ...  The rapid progress in chip technology and the peripherals bring an increase in capabilities. Nowadays, more and more high speed cameras are used for time resolved PIV measurements (TR-PIV).  ... 
doi:10.14279/depositonce-5750 fatcat:erguyoazirgpxjzo4xne7kgece