Numerical Investigation of Flow Properties of Rotating Detonation Engines
Bibliographic record
Abstract
Based on Euler equations with one-step chemical reaction model, 3D numerical simulations of rotating detonation engine (RDE) are performed to investigate flow properties inside its combustor in detail. It is found that most of the flow field inside the combustor of RDE is under subsonic state. At the exit of the combustor, all detonation products exhaust subsonically. Thus, RDE needs a Laval tail nozzle to increase its performance. Near the areas of the detonation wave, the shock wave reflections, the interface between reactants and products, and the contact surface, the radial velocity is large; however, it’s still small and its effects on the performance of RDE can be ignored, compared with the corresponding circumferential and axial velocities. After the detonation wave, the circumferential velocity increases abruptly. While the oblique shock wave seeps, both the circumferential and axial velocities increase. At the exit of the combustor, the circumferential energy flux is about 20% of the total energy flux. This will cause energy loss and reduce RDE performance.
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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 | 0.001 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.001 |
| 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".