Streamer propagation characteristics of nanosecond pulsed discharge plasma on fluidized particles surface: experimental investigation and numerical simulation
Abstract Plasma fluidized-bed contributes to strengthening the interaction between active species in plasma and fluidized powder particles, resulting in higher active species utilization efficiency and superior powders processing/modification performance. However, the plasma streamer dynamics on the...
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crioppubl:10.1088/1361-6463/ad33f8 2024-06-02T08:11:51+00:00 Streamer propagation characteristics of nanosecond pulsed discharge plasma on fluidized particles surface: experimental investigation and numerical simulation Li, Ju Jiang, Nan Wang, Xiaolong Yu, Guanglin Peng, Bangfa He, Junwen Li, Jie National Natural Science Foundation of China 2024 http://dx.doi.org/10.1088/1361-6463/ad33f8 https://iopscience.iop.org/article/10.1088/1361-6463/ad33f8 https://iopscience.iop.org/article/10.1088/1361-6463/ad33f8/pdf unknown IOP Publishing https://iopscience.iop.org/page/copyright https://iopscience.iop.org/info/page/text-and-data-mining Journal of Physics D: Applied Physics volume 57, issue 25, page 255203 ISSN 0022-3727 1361-6463 journal-article 2024 crioppubl https://doi.org/10.1088/1361-6463/ad33f8 2024-05-07T14:04:57Z Abstract Plasma fluidized-bed contributes to strengthening the interaction between active species in plasma and fluidized powder particles, resulting in higher active species utilization efficiency and superior powders processing/modification performance. However, the plasma streamer dynamics on the fluidized powder particles are still unclear due to the intricacy of plasma fluidized-bed. In this work, the time-resolved evolution behavior of plasma streamers on fluidized powder particles surfaces has been explored in plasma fluidized-bed system based on a simplified pin-cylinder configuration. The results reveal that the entire streamer propagation process includes volume discharge and surface discharge. The maximum electron density generated by surface discharge is one order of magnitude higher than that produced by volume discharge, indicating that surface discharge plays a dominant role in powder particles modification. The presence of fluidized particle will cause streamer branching, and the main streamer splits into two independent sub-streamers for propagation in a ‘parabola-like’ shape. Compared with large-size fluidized particles (1000 µ m), streamer wraps a larger area on micron-size fluidized particles (200 µ m), with a 78% increase in the coverage area, which is favorable to the modification of powder particles. Furthermore, the evolution of active species on fluidized particle surface is analyzed. The active species (N, O, O 2 − ) are mainly distributed around the north pole, and N 2 + is mainly distributed between 25° and 50° of the particles. With the decrease of fluidized particle size, the polarization effect between particles is significantly enhanced, and the maxima of the number densities of active species increase. These findings help to get a better understanding of the interaction between plasma and fluidized particles in fluidized systems. Article in Journal/Newspaper North Pole IOP Publishing North Pole Journal of Physics D: Applied Physics 57 25 255203 |
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Abstract Plasma fluidized-bed contributes to strengthening the interaction between active species in plasma and fluidized powder particles, resulting in higher active species utilization efficiency and superior powders processing/modification performance. However, the plasma streamer dynamics on the fluidized powder particles are still unclear due to the intricacy of plasma fluidized-bed. In this work, the time-resolved evolution behavior of plasma streamers on fluidized powder particles surfaces has been explored in plasma fluidized-bed system based on a simplified pin-cylinder configuration. The results reveal that the entire streamer propagation process includes volume discharge and surface discharge. The maximum electron density generated by surface discharge is one order of magnitude higher than that produced by volume discharge, indicating that surface discharge plays a dominant role in powder particles modification. The presence of fluidized particle will cause streamer branching, and the main streamer splits into two independent sub-streamers for propagation in a ‘parabola-like’ shape. Compared with large-size fluidized particles (1000 µ m), streamer wraps a larger area on micron-size fluidized particles (200 µ m), with a 78% increase in the coverage area, which is favorable to the modification of powder particles. Furthermore, the evolution of active species on fluidized particle surface is analyzed. The active species (N, O, O 2 − ) are mainly distributed around the north pole, and N 2 + is mainly distributed between 25° and 50° of the particles. With the decrease of fluidized particle size, the polarization effect between particles is significantly enhanced, and the maxima of the number densities of active species increase. These findings help to get a better understanding of the interaction between plasma and fluidized particles in fluidized systems. |
author2 |
National Natural Science Foundation of China |
format |
Article in Journal/Newspaper |
author |
Li, Ju Jiang, Nan Wang, Xiaolong Yu, Guanglin Peng, Bangfa He, Junwen Li, Jie |
spellingShingle |
Li, Ju Jiang, Nan Wang, Xiaolong Yu, Guanglin Peng, Bangfa He, Junwen Li, Jie Streamer propagation characteristics of nanosecond pulsed discharge plasma on fluidized particles surface: experimental investigation and numerical simulation |
author_facet |
Li, Ju Jiang, Nan Wang, Xiaolong Yu, Guanglin Peng, Bangfa He, Junwen Li, Jie |
author_sort |
Li, Ju |
title |
Streamer propagation characteristics of nanosecond pulsed discharge plasma on fluidized particles surface: experimental investigation and numerical simulation |
title_short |
Streamer propagation characteristics of nanosecond pulsed discharge plasma on fluidized particles surface: experimental investigation and numerical simulation |
title_full |
Streamer propagation characteristics of nanosecond pulsed discharge plasma on fluidized particles surface: experimental investigation and numerical simulation |
title_fullStr |
Streamer propagation characteristics of nanosecond pulsed discharge plasma on fluidized particles surface: experimental investigation and numerical simulation |
title_full_unstemmed |
Streamer propagation characteristics of nanosecond pulsed discharge plasma on fluidized particles surface: experimental investigation and numerical simulation |
title_sort |
streamer propagation characteristics of nanosecond pulsed discharge plasma on fluidized particles surface: experimental investigation and numerical simulation |
publisher |
IOP Publishing |
publishDate |
2024 |
url |
http://dx.doi.org/10.1088/1361-6463/ad33f8 https://iopscience.iop.org/article/10.1088/1361-6463/ad33f8 https://iopscience.iop.org/article/10.1088/1361-6463/ad33f8/pdf |
geographic |
North Pole |
geographic_facet |
North Pole |
genre |
North Pole |
genre_facet |
North Pole |
op_source |
Journal of Physics D: Applied Physics volume 57, issue 25, page 255203 ISSN 0022-3727 1361-6463 |
op_rights |
https://iopscience.iop.org/page/copyright https://iopscience.iop.org/info/page/text-and-data-mining |
op_doi |
https://doi.org/10.1088/1361-6463/ad33f8 |
container_title |
Journal of Physics D: Applied Physics |
container_volume |
57 |
container_issue |
25 |
container_start_page |
255203 |
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1800758135849222144 |