Numerical and experimental investigation on a two-stage reentry turbine
Bibliographic record
Abstract
A reentry turbine is a multi-stage turbine with only one disk, and the medium is re-introduced into the turbine cavity to do work. The reentry turbine is suitable for partial admission, which has the characteristics of small volume and high output power. This paper propose a two-stage reentry turbine of 90-millimeter-mean-diameter, and the stator is replaced by the reentry turbine pipe and Laval nozzles that change the direction and accelerate the medium. Numerical simulation indicates that the reentry turbine can maintain high efficiency; besides, the maximum torque and tangential force on a single blade of the reentry turbine are less than that of the one-stage turbine under the same conditions. The CFD calculation of the two-stage reentry turbine promised 146.7 kW output power, whereas the experiments confirmed 137 kW output power, and the simulation error is less than 7.1%. The output power of the reentry turbine is increased by 13.2% compared to the one-stage turbine. The reentry turbine can achieve high specific power with a compact structure at the condition of the increased total to static pressure radio and a small flow rate.
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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) | 0.001 | 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 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".