Spectral modeling on the vortex-induced response of a tapered circular cylinder based on experimental evidence
Bibliographic record
Abstract
This paper illustrates the application of spectral modeling for analyzing the vortex-induced vibration (VIV) response specifically focusing on a complex scenario involving a tapered circular cylinder exposed to uniform, stationary wind flow characterized by a low level of upstream turbulence. Such modeling is based on experimental evidence gathered during a wind tunnel campaign conducted through both static and dynamic tests. In particular, the definition of the limiting root mean square (RMS) amplitude, the variation of the RMS lift coefficient and of the Strouhal number along the height of the structure result to be crucial in the assessment of the dynamic response. A first model is proposed, based on the outcomes from static tests and from additional insight inferred from the dynamic response. Observing its comparison with the experimental findings in terms of oscillation amplitudes and peak factors, a second refined model is proposed. Moreover, the dynamic behavior of the structure is also investigated through the approach proposed by Engineering Science Data Unit (ESDU) 96030 for tapered structures. The results obtained from applying the spectral model reveal a satisfactory agreement with the experimental outcomes. This accuracy can be significantly attributed to the reproduction of the cellular nature of the vortex-shedding, achieved through an appropriate definition of the Strouhal number along the height of the cylinder. Furthermore, the modeled behavior reveals variations in the regime of the VIV response (e.g., deterministic, transition, stochastic) with respect to the reduced wind velocity, mirroring the findings of the experimental campaign.
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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".