Effects of Geometrical Parameters on Thermal-Hydraulic performance of air flowing in Additively Manufacturable Heat Exchanger
Bibliographic record
Abstract
An additively manufactured airfoil finned plate-fin heat exchanger (PFHE) is proposed to be applied to a flue gas waste heat recovery system.This study numerically investigates the effect of various geometrical characteristics of the airfoil finned channel on the pressure drop and heat transfer using OpenFOAM with dry air as a working cold fluid.The studied parameters include the offset number ( f ), longitudinal number ( l ), transverse number ( t ), and fin height (h f ) of the airfoil.Additionally, the effect of the fin number on the thermal-hydraulic characteristics of the flow channel is also studied to determine the minimum number of fins where the friction factor and Colburn j-factor variation along the flow length is nearly stabilized.The results of the study show that the 20 number of fins is reasonable for assessing the heat exchanger performance.The offset number has an influence on pressure drop and heat transfer until the offset length approaches the fin length, after which it has no effect.The longitudinal number effect on heat transfer per unit area and pressure drop per unit length is a linear variation, while the transverse number and fin height effect is a non-linear variation.
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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".