Experimental Study of Two-Phase Flow-Induced Vibrations in Pipelines Under Varying Flow and Burial Conditions
Why this work is in the frame
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Bibliographic record
Abstract
Abstract The complex nature of two-phase flow increases the difficulty of safety monitoring systems in real-world pipelines. Two-phase flow-induced vibration (FIV), when used as a nonintrusive signal for a novel pipeline structural health monitoring (SHM) technique, requires signal analysis procedures and an experimental database. This paper experimentally characterizes two-phase FIV in pipelines across numerous scenarios, including varying flow conditions and in the presence of soil. The experiment measures structural vibration using tri-axial accelerometers mounted at the top of a pipe. Pipe vibration characteristics are analyzed in both the frequency and time domains. Flow conditions are quantified in terms of various two-phase flow factors, including flow pattern, flow pressure, and dimensionless numbers. Damping effects due to varying soil conditions, including unburied, semiburied, and fully buried, are examined.
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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 | 0.000 |
| 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 it