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Showing 1 to 15 of 15 for “"Stereo PIV"”.
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Cross-plane stereo-PIV measurements of a turbulent boundary layer over highly irregular roughness
… complex roughness topography were explored with stereo particle-image velocimetry measurements in the wall-normal--spanwise plane. The roughness under consideration was replicated from a turbine blade damaged by deposition of foreign materials containing a broad range of topographical scales …
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Combined irregular roughness and favorable-pressure-gradient effects in a turbulent boundary layer
… two-dimensional particle image velocimetry (PIV) measurements in the streamwise{ wall-normal plane and stereo PIV measurements in the wall-normal{spanwise plane. The roughness under consideration was replicated from a turbine blade damaged by deposition of foreign materials and contains a …
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Experimental investigation of 2D and 3D internal wave fields
… wave fields is extensively studied via planarand stereo- Particle Image Velocimetry (PIV) flow field measurement techniques. A benchmark was provided by an experiment involving tidal flow over a 2D Gaussian ridge; this study providing a counterpart with which studies of a 3D incised Gaussian ridge …
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On vortex rings impacting a sharply-stratified interface
… the mixing efficiency is constant. Using a novel Stereo Particle Image Velocimetry (Stereo-PIV) technique, we analyze a series of vortex ring experiments. By amalgamating an ensemble of these experiments, we measure the full, time-resolved, three-dimensional velocity field of the vortex-ring …
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EFFECTS OF WALL PLANE TOPOLOGY ON VORTEX-WALL INTERACTIONS IN A FORCED IMPINGING JET
… stresses. Multi-plane ensemble-averaged stereo PIV is employed to obtain volumetric, phase-averaged data that are subjected to a triple decomposition to quantify the unsteady behavior resulting from the coherent and stochastic fluctuations of the impinging structures. The effects of the …
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A wind tunnel facility for the evaluation of a land-based gas turbine diffuser-collector
… a variety of probe traverse measurements, and Stereo-PIV. Flow within the collector and diffuser were determined to be heavily dependent upon the collector geometry. PIV measurements showed the development of two large counter rotating vortices within the collector. Each symmetric vortex grew …
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Experimental study of low-order models of highly-irregular roughness and their impact on turbulent boundary layers
… roughness, and 2-D particle-image velocimetry (PIV) was used to acquire ensembles of instantaneous velocity fields in the streamwise–wall-normal plane for developing- and developed-flow conditions at moderate Reynolds number followed by stereo PIV measurements in a wall-parallel plane deep in …
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Experimental Study of Low-Order Models of Highly-Irregular Roughness and Their Impact on Turbulent Boundary Layers
The stereo-PIV measurements deep within the roughness sublayer at y = 0.047delta reveal a wealth of information about roughness-induced effects, including the tendency of the roughness to promote 'channeling' of the flow in the form of low- and high-momentum pathways as noted in contour maps of the …
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Phase Locked Flow Measurements of Steady and Unsteady Vortex Generator Jets in a Separating Boundary Layer
… in LPT design. Data were collected using a stereo PIV system that enabled all three components of velocity to be measured. Steady VGJs were injected into a laminar boundary layer on a flat plate (non-separating boundary layer) in order to more fully understand the characteristics and …
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Laser Diagnostics Applied to Lean Premixed Swirling Flames - Simultaneous Flow Field and Scalar Measurements
… surrounding them. Particle Image Velocimetry (PIV) and stereo-PIV were employed for velocity measurements in a given plane. Volumetric Velocimetry (3D PIV) was performed in order to assess the full 3D characteristics of the flow field. Flame-front visualization and fuel distribution …
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Investigating the Interaction of a Supersonic Single Expansion Ramp Nozzle and Sonic Wall Jet
… using time-resolved schlieren imaging, stereo PIV measurements, deck mounted pressure transducers, and far-field microphones. These experiments are performed at the Skytop Turbulence Laboratory at Syracuse University. LES data by The Ohio State University are paired with these …
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Investigating the Structures of Turbulence in a Multi-stream, Rectangular, Supersonic Jet
… are studied via time-resolved schlieren imaging, stereo PIV measurements, dynamic pressure transducers, and far-field acoustics. Experiments are carried out in the anechoic chamber at Syracuse University, and focus primarily on the flow-field. An extensive data set is generated, which reveals a …
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Rotor Wakes; Formations, Interactions, and Design
… Advanced flow diagnostics tools, such as stereoscopic particle image velocimetry (stereo-PIV) to quantify the wake flow in the near-field and far-field, as well as surface pressure taps, and force balance measurements to capture aerodynamic loading. A rotor-test stand was used to monitor …
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Investigating the impact of coupled high-lift devices on natural laminar flow airfoils
Submission original under an indefinite embargo labeled 'Open Access'. The submission was exported from vireo on 2023-09-01 without embargo terms
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Influence of aspect ratio on dynamic stall of a finite wing
The influence of aspect ratio, AR, on the unsteady aerodynamics of pitching wings was examined by comparing experimental performance, flow measurements, and computational results across a range of different AR wings. Performance measurements were acquired for three wings of AR = 3, 4, 5, and an …