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Proceedings Paper

Development of ultrafast computed tomography of highly transient fuel sprays
Author(s): Xin Liu; Jinyuan Liu; Xuefa Li; Seong-Kyun Cheong; Deming Shu; Jin Wang; Mark W. Tate; Alper Ercan; Daniel R. Schuette; Matt J. Renzi; Arthur Woll; Sol M. Gruner
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Paper Abstract

The detailed analysis of the fuel sprays has been well recognized as an important step for optimizing the operation of internal-combustion engines to improve efficiency and reduce emissions. However, the structure and dynamics of highly transient fuel sprays have never been visualized or reconstructed in three dimensions (3D) previously due to numerous technical difficulties. By using an ultrafast x-ray detector and intense monochromatic x-ray beams from synchrotron radiation, the fine structures and dynamics of 1-ms direct-injection gasoline fuel sprays were elucidated for the first time by a newly developed, ultrafast computed microtomography technique. Due to the time-resolved nature and the intensive data analysis, the Fourier transform algorithm was used to achieve an efficient reconstruction process. The temporal and spatial resolutions of the current measurement are 5.1 μs and 150 μm, respectively. Many features associated with the transient liquid flows are readily observable in the reconstructed spray. Furthermore, an accurate 3D fuel density distribution was obtained as the result of the computed tomography in a time-resolved manner. These results not only reveal the characteristics of automotive fuel sprays with unprecedented details, but will also facilitate realistic computational fluid dynamic simulations in highly transient, multiphase systems.

Paper Details

Date Published: 26 October 2004
PDF: 8 pages
Proc. SPIE 5535, Developments in X-Ray Tomography IV, (26 October 2004); doi: 10.1117/12.560167
Show Author Affiliations
Xin Liu, Argonne National Lab. (United States)
Jinyuan Liu, Argonne National Lab. (United States)
Xuefa Li, Argonne National Lab. (United States)
Seong-Kyun Cheong, Argonne National Lab. (United States)
Deming Shu, Argonne National Lab. (United States)
Jin Wang, Argonne National Lab. (United States)
Mark W. Tate, Cornell Univ. (United States)
Alper Ercan, Cornell Univ. (United States)
Daniel R. Schuette, Cornell Univ. (United States)
Matt J. Renzi, Cornell Univ. (United States)
Arthur Woll, Cornell Univ. (United States)
Sol M. Gruner, Cornell Univ. (United States)

Published in SPIE Proceedings Vol. 5535:
Developments in X-Ray Tomography IV
Ulrich Bonse, Editor(s)

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