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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 4 — Feb. 24, 2014
  • pp: 4768–4778

Volumetric imaging of turbulent reactive flows at kHz based on computed tomography

Xuesong Li and Lin Ma  »View Author Affiliations


Optics Express, Vol. 22, Issue 4, pp. 4768-4778 (2014)
http://dx.doi.org/10.1364/OE.22.004768


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Abstract

Diagnostics with three-dimensional (3D) spatial resolution and rapid temporal resolution have been long desired to resolve the complicated turbulence-chemistry interactions. This paper describes a method based on based on tomographic chemiluminescence (TC) to address this diagnostic need. The TC technique used multiple cameras to simultaneously record CH* chemiluminescence emitted by turbulent flames from different view angles. A 3D tomographic algorithm was then applied to reconstruct the instantaneous flame structures volumetrically. Both experimental and computational studies have been conducted to demonstrate and validate the 3D measurements. Experimental results were obtained instantaneously at kHz temporal rate, in a volume of 16 × 16 × 16 cm3, and with a spatial resolution estimated to be 2~3 mm. Computations were conducted to simulate the experimental conditions for comparison and validation.

© 2014 Optical Society of America

OCIS Codes
(100.6890) Image processing : Three-dimensional image processing
(100.6950) Image processing : Tomographic image processing
(120.1740) Instrumentation, measurement, and metrology : Combustion diagnostics
(300.2140) Spectroscopy : Emission

ToC Category:
Image Processing

History
Original Manuscript: December 5, 2013
Revised Manuscript: January 27, 2014
Manuscript Accepted: January 27, 2014
Published: February 21, 2014

Citation
Xuesong Li and Lin Ma, "Volumetric imaging of turbulent reactive flows at kHz based on computed tomography," Opt. Express 22, 4768-4778 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-4-4768


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