Natural Convection from Locally Heated Horizontal Rectangular Plate-Fin Heat Sinks
Bibliographic record
Abstract
This work investigates the characteristics and performance of natural convection from locally heated horizontal rectangular plate-fin heat sinks using 3-D unsteady numerical analysis.Different fin lengths (L = 128 or 254 mm), fin heights (H = 38 or 45 mm), heat fluxes (q = 0.9 or 1.8 W/cm 2 ), and heater positions (symmetric or asymmetric heating) are examined.For these long heat sinks, oscillating sliding-chimney plume always prevails to yield oscillating heat transfer coefficients.For each case, the time-averaged overall heat transfer coefficient ℎ ̅ and the averaged base plate temperature 𝑇 ̅ 𝑏 are calculated.The 𝑇 ̅ 𝑏 is then used as the input uniform temperature to obtain the equivalent time-averaged overall heat transfer coefficient ℎ ̅ 𝑒𝑞 .For all the investigated cases, ℎ ̅ 𝑒𝑞 differs from ℎ ̅ by less than 4%.This means that ℎ ̅ for a locally heated condition may be equivalently obtained employing empirical Nu correlations derived for uniform-temperature horizontal heat sinks, as long as the average base temperature 𝑇 ̅ 𝑏 is used.
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 | 0.000 |
| 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) | 0.001 | 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".