Study of Surface Dielectric Barrier Discharge Plasma Actuator in Post-Combustion Environments
Bibliographic record
Abstract
View Video Presentation: https://doi.org/10.2514/6.2021-1491.vid This paper compares the generation and propagation of plasma generated by a surface dielectric barrier discharge (SDBD) plasma actuator in gases commonly found in a post-combustion environment. Simulations are performed at standard atmospheric temperature and pressure conditions for a plasma generated by a 1.2 kV SDBD over 50 ns. Results contrast the behavior of plasma generated in molecular nitrogen with that of carbon dioxide, carbon monoxide, hydrogen and water vapor. Salient features of the plasma generated in different gases are found to be dependent on the ionization and transport properties of the gases. Ion densities are found to be on the order of 10^21 m^-3 in N2, H2O, H2 and CO2, and on the order of 10^19 m^-3 in CO. Changes in ion mobility between 66%-485% result in changes in the plasma propagation by 84%-230% when compared to N2 plasma. It is also shown that the ion mobility of H2+, 485% that of N2+ ion mobility, is sufficient enough to maintain a streamwise electric potential gradient in the region behind the plasma head.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.001 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from itClassification
machine, unvalidatedMachine predicted; a candidate call from one source (direct Gemma or distilled Codex), not a consensus.
How this classification was reached, model by model and score by score, is at the end of the page under "How this classification was reached".