Numerical Investigation of a Radial Microchannel Heat Exchanger with Varying Cross-Sectional Channels
Bibliographic record
Abstract
This paper investigates the heat transfer performance of a radial microchannel heat exchanger with varying cross-sectional-area channels. The thermal performance of axially varying cross-sectional-area channels is compared with uniform cross-sectional-area channels. The first model is a one-dimensional thermal-resistance based model, and the second model is a three-dimensional conjugate computational fluid dynamics analysis using FLUENT software. The heat sink has a footprint area of 3.5 cm 2 and the fluid flows radially inward. The inlet aspect ratio is varied from 0.4 to 1.0, and the outlet aspect ratio is fixed at 0.5. Inclusion of axial conduction effects are found to be imperative for accurate modeling of a radial configuration using the one-dimensional thermal-resistance model. The analysis shows that when constrained by a fixed channel-outlet area, increasing the channel-inlet area will improve the thermal performance. At low pumping powers, the present scheme is found to have thermal performance that is equivalent to or better than the performances with other experimentally and numerically investigated microchannel heat sink designs.
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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".