Computation of axisymmetric jet flow with Spalart-Allmaras turbulence model
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Bibliographic record
Abstract
A computational study for axisymmetric jet flow with Spalart Allmaras turbulence model was carried out.The second order finite volume method,fine unstructured grids and non reflecting boundary condition were used in solving the compressible N S equations.The numerical results are in good agreement with experimental data.It is demonstrated that the Spalart Allmaras turbulence model is suitable for numerical simulation of the axisymmetric jet flow and the sufficiently fine unstructured grids are helpful in obtaining the flow field details.In addition,it is found that,for under expanded jet flow,computation should be started from the internal upstream of the nozzle exit and its exit boundary conditioned should not be prescribed as sonic profile in this case.It is useful in understanding nozzle internal and external flow field and impinging jet parameter distribution.It is also helpful for optimal design of nozzle internal structure.
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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 | 0.001 | 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 it