Thermo-hydraulic performance of uniform and hybrid Triply Periodic Minimal Surfaces (TPMS) heat exchangers
Bibliographic record
Abstract
Triply Periodic Minimal Surfaces (TPMS) geometries are remarkable solutions for achieving optimal heat transfer performance in industries where space-efficient cooling solutions are required. Utilizing these additively manufactured geometries in Heat Exchanger (HX) applications involves a trade-off between maximizing heat transfer and minimizing pressure drop. While prior studies mostly focused on uniform TPMS-based HXs, this research investigates the thermo-hydraulic performance of both uniform (Gyroid, Diamond D, and FRD) and hybrid (Gyroid-FRD, Diamond D-Gyroid, and Diamond D-FRD) TPMS-based HXs. In this study, TPMS geometries were generated via LattGen, and design setup and Computational Fluid Dynamics (CFD) simulation were conducted using Ansys Fluent 2023 R2. All geometries were generated at 30% relative density, and hybrid transitions were achieved via the Sigmoid function. A k-epsilon turbulence model was employed for CFD analysis, and the model was validated against existing literature. Results illustrate that the FRD HX exhibits the best temperature change performance, corresponding to a 13.9 [K] increase in temperature, while introducing a 239.58 [Pa] pressure drop. Among hybrids, Diamond D-FRD HX enabled 13.82 [K] temperature change, improving base uniform FRD flow resistance by 62.5%. The investigation reveals that hybridization can yield an intermediate of thermo-hydraulic performance characteristics from their uniform base structures.
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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 | 0.001 | 0.000 |
| Meta-epidemiology (narrow) | 0.001 | 0.001 |
| Meta-epidemiology (broad) | 0.001 | 0.000 |
| Bibliometrics | 0.001 | 0.002 |
| Science and technology studies | 0.000 | 0.001 |
| Scholarly communication | 0.000 | 0.001 |
| Open science | 0.001 | 0.000 |
| Research integrity | 0.000 | 0.001 |
| 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".