Étude des efforts hydrodynamiques sur un fond mobile en aval d'un dissipateur d'énergie de type auge
Bibliographic record
Abstract
The continuous scour of an erodible bed downstream a roller bucket energy dissipater makes it difficult to quantify the efforts applied on the bed. An astute technique allows the measurement of these efforts for various stages of scour and facilitates a better comprehension of the interaction between these efforts and the scour downstream. This technique consists in measuring the bed profile (downstream the dissipater) as a function of time and reproducing scoured profiles using a solid model (concrete) that allows the setting of the measuring devices. The analysis of the efforts has shown that as soon as the scour starts, a small bed deformation induces important changes in the pressure and in the pressure fluctuation distributions in the vicinity of the structure. As erosion goes on, the efforts vary slightly and the distributions remain unchanged. The behaviour of the efforts regarding the erosive process could be interpreted by the nature of scour phenomenon, which develops strongly during the initial phase, and by the specific behaviour of the zone in the vicinity of the bucket, which evolves rapidly and stabilizes quickly.Key words: hydrodynamic efforts, pressure, pressure fluctuation, energy dissipater, roller bucket, movable bed.
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How this classification was reachedexpand
Full frame machine prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. The Gemma side is a direct model label for every work in the frame, read from the title-only record. The Codex side is a classifier learned from the 10,348 direct Codex labels and calibrated to design-weighted sample rates; fields without enough sample support carry no Codex call. Candidate is the union of the two sides; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels.
Distilled classifier scores by category (both heads)
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.001 | 0.003 |
| Meta-epidemiology (narrow) | 0.001 | 0.000 |
| Meta-epidemiology (broad) | 0.001 | 0.001 |
| Bibliometrics | 0.002 | 0.001 |
| Science and technology studies | 0.001 | 0.002 |
| Scholarly communication | 0.002 | 0.001 |
| Open science | 0.001 | 0.001 |
| Research integrity | 0.001 | 0.001 |
| Insufficient payload (model declined to judge) | 0.002 | 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 source (direct Gemma or distilled Codex), 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".