A New Impinging Jet Device for Corrosion Studies
Bibliographic record
Abstract
Abstract A new high pressure and temperature submerged impinging jet device is described. The experimental results of its flow characteristics are summarized. Local mass transfers on a Teflon disc normal to the jet with eight 1-mm diameter microelectrodes located at 0 < x/r < 3.8, where x is the distance from the stagnation point on the disc and r is the jet nozzle radius, were measured using the limiting current of potassium ferricyanide solution for 50 ≤ Reynolds number (Re) ≤ 4500 at a jet nozzle exit to disc height, H, to r ratio of 10. Flow transition from laminar to turbulent flow occurred at Re ≈ 800. The empirical relation between the local Sherwood number (Sh) and Re in the stagnation region and developing wall jet region gave two segmented linear correlations. The shear effects of the circular jet on flat carbon steel discs examined after 24 h exposure at Re = 780 showed significantly more material loss at x/r = 2.5. This coincided with the location where the local Sh obtained from the mass transfer measurements began to raise. The device is scalable and can generate a wide range of Re, enabling meaningful laboratory inhibitor and corrosion studies at high shear stress.
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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".