Effects of oxidizer composition on the structure of laminar coflow (CO-H2)/(O2/H2O) diffusion flames
Bibliographic record
Abstract
The structures of laminar coflow syngas diffusion flames burning in O₂/H₂O atmosphere were experimentally and numerically studied at 1 atm and inlet temperature of 400 K. The effects of oxidizer composition on the attachment and fuel pyrolysis inside the fuel tube were investigated by varying the O₂/H₂O molar ratio from 20/80 to 100/0. The flame attachment phenomenon was captured using a digital camera, and a 2D flame code was adopted to model the thermal and chemical structures of laminar coflow syngas flames using detailed kinetics mechanism. Results show that increasing the O₂/H₂O ratio has little influence on the flame attachment since the diffusions of both the fuel components and O₂ in the oxidizer were promoted. However, the temperature of the burner tip was significantly enhanced as O₂/H₂O ratio increases, and kinetics analysis shows that it is attributed to the promoted heat release rate of H + O₂(+M) = HO₂(+M). As the O₂/H₂O ratio increases, syngas pyrolysis inside the fuel tube is promoted, mainly through the H consumption reactions because of the enhanced back diffusion of H from the flame front into the burner.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
How this classification was reachedexpand
Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| 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) | 0.000 | 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 teacher head, 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".