Effect of Pitch Ratio and Tube Support Conditions on the Dynamic Behavior of a Low Mass-Damping Parameter Parallel Triangular Array
Bibliographic record
Abstract
Abstract To better explain the basic aspects of fluidelastic instability (FEI) in tube arrays, a rigorous research program has been initiated. In this research, the authors executed a series of water-flow experiments utilizing a fully flexible, parallel triangular tube array (a cluster of 9 brass rods). To examine the effect of pitch ratio on the onset of FEI, four pitch-to-diameter ratios of 1.27, 1.37, 1.48, and 1.62 were tested. To investigate the effect of flat bar support on the stability threshold, a series of experiments were carried out for each pitch ratio with varied tube/support clearances. The findings of these experimental investigations and a full description of the flow loop, including the utilized instrumentation, are reported. The current results show good agreement with the available data from previous investigations and interesting findings in terms of the effect of the pitch ratio and support clearance on the stability threshold.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.001 | 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".