Synthetic Jet Performance for Different Axisymmetric Cavities Analyzed with Three-Dimensional Lattice-Boltzmann Method
Bibliographic record
Abstract
Asynthetic jet actuator is a zero-net mass-flux device that imparts momentum and is useful for active flow control [1,2]. To study the influence of cavity shape on synthetic jet performance, this Note presents model results to validate previous experimental investigations that the synthetic jet is sensitive to cavity shape. Three axisymmetric synthetic jets with different cavity shapes (cylindrical, conical, and contraction), as shown in Figs. 1 and 2, are examined for jet performance, keeping other parameters constant, such as cavity volume, nozzle length, and nozzle diameter [3–5]. Using a three-dimensional lattice-Boltzmann method with the Bhatnagar–Gross–Krook collision models [6–8], the comparison of the three shaped cavities is conducted using the same sinusoidal velocity inlet boundary condition. Time-dependent synthetic jet simulations are carried out, the velocity and momentum profiles are illustrated and discussed, and the numerical simulations are validated against previous experimental data. The computed results confirm that synthetic jet performance depend on cavity shape. The jet flow rate and momentum, relevant in flow control applications, decrease sequentially from the cylindrical to the conical to the contraction cavity.
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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".