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

Abstract

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.

Authors:
 [1];  [1];  [2];  [1]
  1. Sandia National Lab. (SNL-CA), Livermore, CA (United States)
  2. Korea Institute of Machinery and Materials, Daejon (Korea)
Publication Date:
Research Org.:
Sandia National Lab. (SNL-CA), Livermore, CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Vehicle Technologies Office (EE-3V)
OSTI Identifier:
1327911
Report Number(s):
SAND-2016-9612J
Journal ID: ISSN 0957-0233; 647762
Grant/Contract Number:  
AC04-94AL85000
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Measurement Science and Technology
Additional Journal Information:
Journal Volume: 27; Journal Issue: 8; Journal ID: ISSN 0957-0233
Publisher:
IOP Publishing
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; particle image velocimetry; optical distortion; swirl-plane; re-entrant piston geometry; ray tracing; back-projection; diesel engine

Citation Formats

Zha, Kan, Busch, Stephen, Park, Cheolwoong, and Miles, Paul C. A novel method for correction of temporally- and spatially-variant optical distortion in planar particle image velocimetry. United States: N. p., 2016. Web. doi:10.1088/0957-0233/27/8/085201.
Zha, Kan, Busch, Stephen, Park, Cheolwoong, & Miles, Paul C. A novel method for correction of temporally- and spatially-variant optical distortion in planar particle image velocimetry. United States. doi:10.1088/0957-0233/27/8/085201.
Zha, Kan, Busch, Stephen, Park, Cheolwoong, and Miles, Paul C. Fri . "A novel method for correction of temporally- and spatially-variant optical distortion in planar particle image velocimetry". United States. doi:10.1088/0957-0233/27/8/085201. https://www.osti.gov/servlets/purl/1327911.
@article{osti_1327911,
title = {A novel method for correction of temporally- and spatially-variant optical distortion in planar particle image velocimetry},
author = {Zha, Kan and Busch, Stephen and Park, Cheolwoong and Miles, Paul C.},
abstractNote = {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.},
doi = {10.1088/0957-0233/27/8/085201},
journal = {Measurement Science and Technology},
number = 8,
volume = 27,
place = {United States},
year = {Fri Jun 24 00:00:00 EDT 2016},
month = {Fri Jun 24 00:00:00 EDT 2016}
}

Journal Article:
Free Publicly Available Full Text
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