Single-camera, three-dimensional particle tracking velocimetry

Peterson, Kevin; Regaard, Boris; Heinemann, Stefan; Sick, Volker

doi:10.1364/oe.20.009031

Cited by 20 publications

(11 citation statements)

References 35 publications

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“…This section provides an overview of the foundational principles and performance of the singlecamera 3D velocimetry measurement technique, previously developed at the University of Michigan [9]. The single-camera, 3-D particle tracking velocimetry (SC3D -PTV) technique is a compact diagnostic tool recently developed for performing three-component volumetric velocity (3C3D) measurements in a limited measurement volume.…”

Section: Single Camera 3-d Particle Tracking Velocimetry (Sc3d -Ptv)mentioning

confidence: 99%

“…If a particle image is included in more than one four-image set, only the four-image set with the highest degree of similar features is retained. Particle image similarity is evaluated using seven features: 1) peak intensity 2) summed intensity 3) total number of pixels 4) width, as measured in pixels 5) height, as measured in pixels 6) maximum value of a cross-correlation between zero-padded raw particle images 7) maximum value of a normalized cross-correlation between zero-padded binarized particle images [9].…”

Section: Single Camera 3-d Particle Tracking Velocimetry (Sc3d -Ptv)mentioning

confidence: 99%

“…The average velocity difference between the SC3D -PTV and stereo -PIV results was 3% with a maximum difference of 9%. More details on the experimental set-up and data processing for the validation may be found in [9].…”

Section: Single Camera 3-d Particle Tracking Velocimetry (Sc3d -Ptv)mentioning

confidence: 99%

“…A single-camera approach for 3-D velocity measurements using a particle-tracking algorithm was recently developed at the University of Michigan [9] to enable flow investigations in regions of limited optical access. Thermographic phosphors were proposed as flow and temperature tracers to extend the capabilities of a novel, compact 3-D velocimetry diagnostic to include highspeed, 3-D thermometry.…”

Section: Introductionmentioning

confidence: 99%

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A compact single-camera system for high-speed, simultaneous 3-D velocity and temperature measurements.

Lu¹,

Sick²,

Frank³

2013

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The University of Michigan and Sandia National Laboratories collaborated on the initial development of a compact single-camera approach for simultaneously measuring 3-D gasphase velocity and temperature fields at high frame rates. A compact diagnostic tool is desired to enable investigations of flows with limited optical access, such as near-wall flows in an internal combustion engine. These in-cylinder flows play a crucial role in improving engine performance. Thermographic phosphors were proposed as flow and temperature tracers to extend the capabilities of a novel, compact 3D velocimetry diagnostic to include high-speed thermometry. Ratiometric measurements were performed using two spectral bands of laser-induced phosphorescence emission from BaMg 2 Al 10 O 17 :Eu (BAM) phosphors in a heated air flow to determine the optimal optical configuration for accurate temperature measurements. The originally planned multi-year research project ended prematurely after the first year due to the Sandia-sponsored student leaving the research group at the University of Michigan. 4 ACKNOWLEDGMENTSThis project was in part funded by the College of Engineering, University of Michigan.5

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Section: Single Camera 3-d Particle Tracking Velocimetry (Sc3d -Ptv)mentioning

confidence: 99%

Section: Single Camera 3-d Particle Tracking Velocimetry (Sc3d -Ptv)mentioning

confidence: 99%

Section: Single Camera 3-d Particle Tracking Velocimetry (Sc3d -Ptv)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

A compact single-camera system for high-speed, simultaneous 3-D velocity and temperature measurements.

Lu¹,

Sick²,

Frank³

2013

Self Cite

View full text Add to dashboard Cite

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“…For example, a laser cluster, a scanning mirror, and a custom-made camera cluster were used to resolve the 3D structures of mixture fields and flames within an engine [13]. Progress towards volumetrically resolved measurements in combustion processes were achieved through a combination of tomographic particle image velocimetry (PIV) [14] and flame front measurements [10,15], as well as a single-camera particle tracking technique for small-scale measurements [16]. Recently, fast-scanning setups have enabled the 3D imaging of structures [17,18], including those revealed from hydroxyl radicals through laser-induced fluorescence [19,20].…”

Section: Introductionmentioning

confidence: 99%

Plenoptic Single-Shot 3D Imaging of In-Cylinder Fuel Spray Geometry

Lillo

Greene

Sick

2014

Zeitschrift Für Physikalische Chemie

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Progress in understanding turbulent combustion requires access to information that is derived from instantaneous 3D images showing the contours of the flame front, the flow field, and other quantities. The experimental effort to acquire such information is typically extraordinarily high and therefore not as widely used as needed. The introduction of commercially available plenoptic cameras now provides a means to simplify some of these measurements as is described in this study. A single 29 mega-pixel plenoptic camera was used to record the Mie scattering signals from volumetrically illuminated fuel sprays. Instantaneous 3D images were acquired from within the cylinder of an optically accessible engine for three automotive fuel injectors of differing nominal spray angles. Current reconstruction algorithms do not yet take translucent imaging conditions into account and therefore a quantitative analysis of the full 3D structure of the sprays was not possible. However, the plenoptic system did prove capable of accurately reconstructing bulk spray features such as spray angles. The 3D spray images were validated with data from a conventional 2D imaging system. This study demonstrates the feasibility of using a single plenoptic camera to view spray geometry in 3D, even from within the challenging in-cylinder engine environment.

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Photon‐Counting 3D Velocimetry Empowered by OAM‐Based Multi‐Point Doppler Effect

Zhang,

Nie

et al. 2024

Laser & Photonics Reviews

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Velocimetry of a motion target within 3‐D space is highly desirable in numerous applicable realms, ranging from explosion and shock wave physics, aerospace engineering to astronomical surveys. However, it is challenging to achieve synchronous, real‐time, and photon‐counting 3‐D velocimetry in modern frameworks as they either require separate multi‐directional detections, and cumbersome calculation processes or are confined to achieve in situ measurements. Here, a new conceptual paradigm is proposed to circumvent these constraints using orbital‐angular‐momentum (OAM)‐driven multi‐point Doppler effect at the photon‐counting level. This scheme, emanating from a single‐direction launch of an on‐demand engineered sequence OAM light mode onto a motion surface, enables simultaneous and independent detections of time‐varying Doppler photon‐count events from three orthogonal echo light paths. Concretely, at the range of motion velocity of 0.25–0.5 ms−1, the relative measurement errors of this proof‐of‐principle prototype are below 1.5%, thus achieving high‐accuracy 3‐D velocimetry at the photon‐counting level for the first time. The exploration of the OAM‐photon‐counting 3‐D velocimetry techniques provides unprecedented advantages in potential applications of synchronous, real‐time, high‐efficiency, and long‐range quantum lidar.

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Single-camera, three-dimensional particle tracking velocimetry

Cited by 20 publications

References 35 publications

A compact single-camera system for high-speed, simultaneous 3-D velocity and temperature measurements.

A compact single-camera system for high-speed, simultaneous 3-D velocity and temperature measurements.

Plenoptic Single-Shot 3D Imaging of In-Cylinder Fuel Spray Geometry

Photon‐Counting 3D Velocimetry Empowered by OAM‐Based Multi‐Point Doppler Effect

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