Bulletin of the American Physical Society
71st Annual Meeting of the APS Division of Fluid Dynamics
Volume 63, Number 13
Sunday–Tuesday, November 18–20, 2018; Atlanta, Georgia
Session L21: Experimental Techniques: Pressure, Density, Temperature and Concentration
4:05 PM–6:28 PM,
Monday, November 19, 2018
Georgia World Congress Center
Room: B309
Chair: Michael Hargather, New Mexico Institute of Mining and Technology
Abstract ID: BAPS.2018.DFD.L21.4
Abstract: L21.00004 : Development of synchrotron X-ray computed tomography for quantitative measurements of gas-phase temperature in reacting flows*
4:44 PM–4:57 PM
Presenter:
Emeric Boigne
(Department of Mechanical Engineering - Stanford University)
Authors:
Emeric Boigne
(Department of Mechanical Engineering - Stanford University)
Danyal Mohaddes Khorassani
(Department of Mechanical Engineering - Stanford University)
Priyanka Muhunthan
(Department of Mechanical Engineering - Stanford University)
Sadaf Sobhani
(Department of Mechanical Engineering - Stanford University)
Dula Parkinson
(Advanced Light Source, Lawrence Berkeley National Laboratory)
Harold Barnard
(Advanced Light Source, Lawrence Berkeley National Laboratory)
Matthias Ihme
(Department of Mechanical Engineering - Stanford University)
Laboratory X-ray computed tomography systems have recently been used to measure the 3D temperature field in reacting flows. The present work extends this technique to micro-scale resolution by employing a synchrotron source. Of particular focus is hereby the quantification of the accuracy and uncertainties of the measurements and the examination of conditions required to retrieve the gas temperature from X-ray absorption measurements. The specific advantages and constraints of using a synchrotron source are discussed and the experimental procedure is detailed. Cold-flow calibration experiments as well as measurements on a flat-flame are reported. The merit of this measurement technique for micro-scale applications with optically inaccessible media is then illustrated in the context of a porous media burner. The 3D temperature field extracted from X-ray computed tomography measurements is examined to identify interstitial combustion modes and flame/wall coupling within the porous matrix.
*This work is supported by a Leading Edge Aeronautics Research for NASA (LEARN) grant (Award no. NNX16AM14A) and by the National Science Foundation (Award no. CBET-1800906). Experiments were performed at the 8.3.2 BL Beamline of the Advanced Light Source (Lawrence Berkeley National Laboratory).
To cite this abstract, use the following reference: http://meetings.aps.org/link/BAPS.2018.DFD.L21.4
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