Extracting the turbulent flow-field from beam emission spectroscopy images using velocimetry.
Publication
, Journal Article
Kriete, DM; McKee, GR; Fonck, RJ; Smith, DR; Whelan, GG; Yan, Z
Published in: The Review of scientific instruments
October 2018
The 2D turbulent E × B flow-field is inferred from density fluctuation images obtained with the beam emission spectroscopy diagnostic on DIII-D using the orthogonal dynamic programming velocimetry algorithm. A synthetic turbulence model is used to test the algorithm and optimize it for measuring zonal flows. Zonal flow measurements are found to require a signal-to-noise ratio above ∼10 and a zonal flow wavelength longer than ∼2 cm. Comparison between the velocimetry-estimated flow-field and the E × B flow-field using a nonlinear gyrokinetic GENE simulation finds that the flow-fields have identical spatial structure and differ only by the mean turbulence phase velocity, which is spatially uniform in this flux tube simulation.
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Published In
The Review of scientific instruments
DOI
EISSN
1089-7623
ISSN
0034-6748
Publication Date
October 2018
Volume
89
Issue
10
Start / End Page
10E107
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 34 Chemical sciences
- 09 Engineering
- 03 Chemical Sciences
- 02 Physical Sciences
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Kriete, D. M., McKee, G. R., Fonck, R. J., Smith, D. R., Whelan, G. G., & Yan, Z. (2018). Extracting the turbulent flow-field from beam emission spectroscopy images using velocimetry. The Review of Scientific Instruments, 89(10), 10E107. https://doi.org/10.1063/1.5036535
Kriete, D. M., G. R. McKee, R. J. Fonck, D. R. Smith, G. G. Whelan, and Z. Yan. “Extracting the turbulent flow-field from beam emission spectroscopy images using velocimetry.” The Review of Scientific Instruments 89, no. 10 (October 2018): 10E107. https://doi.org/10.1063/1.5036535.
Kriete DM, McKee GR, Fonck RJ, Smith DR, Whelan GG, Yan Z. Extracting the turbulent flow-field from beam emission spectroscopy images using velocimetry. The Review of scientific instruments. 2018 Oct;89(10):10E107.
Kriete, D. M., et al. “Extracting the turbulent flow-field from beam emission spectroscopy images using velocimetry.” The Review of Scientific Instruments, vol. 89, no. 10, Oct. 2018, p. 10E107. Epmc, doi:10.1063/1.5036535.
Kriete DM, McKee GR, Fonck RJ, Smith DR, Whelan GG, Yan Z. Extracting the turbulent flow-field from beam emission spectroscopy images using velocimetry. The Review of scientific instruments. 2018 Oct;89(10):10E107.
Published In
The Review of scientific instruments
DOI
EISSN
1089-7623
ISSN
0034-6748
Publication Date
October 2018
Volume
89
Issue
10
Start / End Page
10E107
Related Subject Headings
- Applied Physics
- 51 Physical sciences
- 40 Engineering
- 34 Chemical sciences
- 09 Engineering
- 03 Chemical Sciences
- 02 Physical Sciences