Natural Convective Mass-Transfer Behavior of Horizontal and Vertical Perforated Surfaces
Bibliographic record
Abstract
Rates of free convective mass transfer at horizontal and vertical perforated plates containing circular holes were measured by determining the limiting current of the cathodic deposition of copper from acidified copper sulfate solutions. Variables studied were the vertical plate height or horizontal disk diameter, the hole diameter, and the physical properties of solution. The data at the vertical perforated plate were correlated by the equation Sh = 0.1( Sc × Gr ) 0.33, while the data at the horizontal perforated plate were correlated by the equation Sh = 0.062( Sc × Gr ) 0.349 . A comparison of the rate of mass transfer at perforated surfaces with that at unperforated surfaces shows that the rate of mass transfer at vertical perforated surfaces is almost equal to that at unperforated vertical surfaces, while for horizontal perforated surfaces the rate of mass transfer at horizontal perforated surfaces is lower than that at unperforated surfaces. Industrial implication of the present results for the electronic industry where perforated metallic casings are used to house electronic equipments is highlighted.
Fetched live from OpenAlex and de-inverted. Abstracts are not stored in this database: the inverted indexes are 8.6 GB of the frame’s 9.3 GB of text, and the host has 13 GB free.
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 | 0.000 | 0.001 |
| 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) | 0.001 | 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".