Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session D21: Experimental Techniques: Volumetric PIV/ PTV
2:30 PM–4:40 PM,
Sunday, November 18, 2018
Georgia World Congress Center Room: B309
Chair: Callum Gray, LaVision
Abstract ID: BAPS.2018.DFD.D21.4
Abstract: D21.00004 : Development of a Modular, High-Speed Plenoptic Camera for Flow Tomography*
3:09 PM–3:22 PM
Zu Puayen Tan
Zu Puayen Tan
Brian S Thurow
Modern 3D flow tomography tools rely on simultaneous imaging of the test volume from multiple perspectives. For time-resolved measurements, this requires using one high-speed camera for each perspective, which can be cost-prohibitive. Furthermore, many experimental facilities (e.g., high-pressure rigs) do not have the optical access to allow for multiple cameras. To address this challenge, our study focused on the development of a Modular Plenoptic Adaptor (MPA) to enable light-field imaging capability in standard high-speed cameras. A single MPA-enabled camera is capable of time-resolved 3D PIV measurements, while 2-4 cameras may be used for 3D scalar-field measurements (compared to traditional tomography’s >7). In this talk, we introduce the principles of plenoptic flow measurement, and showcase key results from preliminary tests of the MPA, which include: (i) proof of spatially accurate (<1% error) reconstruction within a 50x32x50mm volume, (ii) post-capture refocusing and perspective manipulation in high-speed videos and (iii) volumetric reconstruction of a droplets field along with time-resolved 3D PIV measurements. Proposed future works include validating the MPA system’s PIV performance on canonical flow-fields such as a vortex ring and uniform flow.
*NSF No. 1725929.
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.D21.4
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