A novel method for correction of temporally- and spatially-variant optical distortion in planar particle image velocimetry

Zha, Kan; Busch, Stephen; Park, Cheolwoong; Miles, Paul C.

doi:10.1088/0957-0233/27/8/085201

Title: A novel method for correction of temporally- and spatially-variant optical distortion in planar particle image velocimetry

Journal Article · Fri Jun 24 00:00:00 EDT 2016 · Measurement Science and Technology

DOI:https://doi.org/10.1088/0957-0233/27/8/085201· OSTI ID:1327911

Zha, Kan ^[1]; Busch, Stephen ^[1]; Park, Cheolwoong ^[2]; Miles, Paul C. ^[1]

Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Korea Institute of Machinery and Materials, Daejon (Korea)

In-cylinder flow measurements are necessary to gain a fundamental understanding of swirl-supported, light-duty Diesel engine processes for high thermal efficiency and low emissions. Planar particle image velocimetry (PIV) can be used for non-intrusive, in situ measurement of swirl-plane velocity fields through a transparent piston. In order to keep the flow unchanged from all-metal engine operation, the geometry of the transparent piston must adapt the production-intent metal piston geometry. As a result, a temporally- and spatially-variant optical distortion is introduced to the particle images. Here, to ensure reliable measurement of particle displacements, this work documents a systematic exploration of optical distortion quantification and a hybrid back-projection procedure that combines ray-tracing-based geometric and in situ manual back-projection approaches.

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Research Organization:: Sandia National Lab. (SNL-CA), Livermore, CA (United States)

Sponsoring Organization:: USDOE Office of Energy Efficiency and Renewable Energy (EERE), Sustainable Transportation Office. Vehicle Technologies Office

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1327911

Report Number(s):: SAND-2016-9612J; 647762

Journal Information:: Measurement Science and Technology, Vol. 27, Issue 8; ISSN 0957-0233

Publisher:: IOP PublishingCopyright Statement

Country of Publication:: United States

Language:: English

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Cited by: 5 works

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References (13)

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Piston geometry effects in a light-duty, swirl-supported diesel engine: Flow structure characterization Perini, Federico; Zha, Kan; Busch, Stephen International Journal of Engine Research, Vol. 19, Issue 10 https://doi.org/10.1177/1468087417742572	journal	December 2017

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