Interaction between a diesel-fuel spray and entrained air with single- and double-injection strategies using large eddy simulations
Bibliographic record
Abstract
Interaction between fuel and air in a combustion chamber is one of the main drivers of the mixing process. Experimentally, flow visualizations are limited by high droplet density in the spray. Numerically, the ability of large eddy simulations (LES) to resolve large scales of flow offers good perspectives on capturing flow structures issued from the interaction between the Lagrangian (fuel droplets) and Eulerian (ambient gas) phases. This study examined these interactions first during a single injection using 3D and 2D criteria for both phases. As for the 3D criteria, the spray shape was analyzed in parallel to the Q-criteria applied to the Eulerian phase, making it possible to relate the spray deformations to some specific Eulerian structures. Secondly, 2D criteria were the fuel mass-fraction field and Eulerian streamlines, both taken in the mid-plane of the spray. This last analysis allows for identifying certain mechanisms involved in the Eulerian phase's structure generation and relates it to high fuel-concentration areas in the fuel mass-fraction visualizations. Keywords: Diesel fuel spray, Large eddy simulation, Multiple injection, Coherent structures, Lagrangian-Eulerian interaction, Air-spray interactions
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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".