Flow Induced Vibration of Separated Two-Phase Flow Due to Restricting Orifice
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Bibliographic record
Abstract
The current work investigates flow-induced vibrations of piping structures with flow restricting orifices due to separated two-phase flow. Air-water flow through a flow restricting orifice with area ratio of 0.25 was experimentally investigated at various superficial velocities ranging from JL from 0.46 m/s to 1.3 m/s and JG from 0.76 m/s to 1.7 m/s. The vibration response of the piping structure was captured for stratified-wavy and dispersed annular flow patterns. Also, the time signals of piping displacement and void fraction with the flow structure were analysed. The results show that Flow induced vibrations of piping structures with a flow restricting orifice due to separated two-phase flow due to flow restricting orifice is a strong function of the void fraction upstream of the orifice for stratified-wavy flow pattern. Moreover, the amplitude of vibration at frequency conditions in the neighbourhood of the dominant void fraction frequency reduced with the increase in the gas superficial velocity.
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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 | 0.000 | 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)
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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