Numerical simulations of gaseous cellular detonation interaction with bluff-body obstacles
Bibliographic record
Abstract
In this study, the interaction between a propagating cellular detonation in stoichiometric 2H2/O2 and 2H2/O2/2Ar mixtures with different bluff bodies is investigated computationally. Numerical simulations are performed based on the two-dimensional reactive Euler equations with detailed chemistry models. A finite-volume package AMROC−an open-source code based on the structured adaptive mesh refinement (SAMR) technique−is used for the computations using both a 2nd order accurate, shock-capturing MUSCL-TVD finite volume method and a first-order accurate Godunov splitting method to handle the reaction source term. Adaptive mesh refinement (AMR) is employed to dynamically increase the resolution of a simulation in regions around shocks and reaction fronts. The present numerical results are compared with the recent experimental measurement. The detonation cell evolution, different regions downstream after the interaction, and the effect of obstacle scale and combustible mixture sensitivity are analyzed and discussed.
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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".