Inscrição na biblioteca: Guest
Início Arquivos Representantes Futuras reuniões American Society of Thermal and Fluids Engineering
Second Thermal and Fluids Engineering  Conference

ISSN: 2379-1748

Implementation of Focused Plenoptic Time-Resolved 3D-PTV in the Analysis of a Vortex Flow

Jake Hadfield
Dept. of Mechanical Engineering, University of Alberta, Canada

David S. Nobes
University of Alberta, Department of Mechanical Engineering, Edmonton, T6G 2G8, Alberta, Canada

DOI: 10.1615/TFEC2017.emi.018384
pages 1317-1324


Focused plenoptic imaging is a measurement technique that can perform time-resolved 3D tracking of a particle-seeded fluid. The technique makes use of a single camera equipped with a microlens array, allowing capture of the complete light field. It has the advantage of being simple to set up compared to most other 3D techniques, requiring only a single optical view of the experiment. There are a number of challenges with implementing this technique. The small viewing angle available to this single-camera approach results in difficulty accurately calculating the depths of particles in the fluid. Techniques for addressing this limitation are being investigated. In particular, time-resolved 3D particle tracking has been implemented. Curve fitting along individual particle tracks is used herein to time-average the noise inherent in the depth estimations, with some success. This technique has been tested on the simple case of a steady vortex generated in a vortex chamber. The camera's viewpoint was parallel to the axis of the vortex to maximize the amount of out-of-plane motion that must be resolved by the imaging technique. Overall, this study indicates that implementing focused plenoptic imaging and time-resolved 3DPTV to detect fluid motion may be a viable method for interrogating the 3D motion of a fluid using a single camera.

Compra $20.00 Check subscription Ética e negligência em publicaçãoes Recomendado ao My Librarian Inserir indicador nessa página