Geometry envelope
- Configuration
- straight baseline and two-way corrugated Model 6
- Plate stack
- 8 plates · 4 mm thick
- Channel count
- 14 per plate · semicircular
- Hydraulic diameter
- 1.5275 mm
- Corrugation
- 0.80 mm amplitude · 12.60 mm wavelength
AERO / SYNTHETIC PREBENCHMARK
PREBENCHMARK · SYNTHETIC ONLYPrinted-circuit heat exchanger, with the answer kept out of the model.
Samarmad-derived geometry and operating conditions were assembled before a prediction bundle was frozen. Missing measurements and properties were completed with marked synthetic estimates so the surrounding CFD → transfer → FEA contracts could be exercised without claiming publication agreement.
10 runnable gates passed · 6 synthetic operating points · paper comparison not established
What this entry means
Runnable pipeline proof: PASS. The frozen packet, criteria, hash verification, curved-interface transfer, generic OpenFOAM CHT run, and generic three-level CalculiX run are retained below.
Physical validation: NOT ESTABLISHED. The paper's measurements were not exposed to the model, and the Samarmad-specific corrugated CFD and PCHE structural cases have not been run.
Model-facing input packet
These are the inputs Aero was allowed to use before the synthetic truth was generated. The source paper is linked for attribution; its results and conclusions are not part of this packet.
Operating envelope
- Working fluids
- water / water
- Arrangement
- counter-current
- Inlet temperatures
- 293 K cold · 323 K hot
- Flow regime
- laminar single phase
- Reynolds range
- 300–1900
Synthetic completion: nominal water properties, aluminum solid mechanics, and ±2% channel-diameter / ±1% plate-thickness sensitivity estimates. These are estimates, not transcribed experimental values.
Prediction freeze before synthetic truth
The prediction bundle was sealed and verified before the synthetic pointwise truth existed. The published measurements remain withheld.
| Record | State |
|---|---|
| Prediction frozen before truth | TRUE |
| Publication measurements accessed | FALSE |
| Freeze manifest SHA-256 | 025bf0d8e1056986d3d80662475f723ee824813a9a787904a090a2016f3da4b3 |
| Gate-pack verification | VERIFIED |
| Criteria SHA-256 | ca37cf842c210402ff591cbed1737dfaeb93cba9ba0c9739ec796fe9a806e7b9 |
Gate ledger
The surrounding pipeline contracts are explicit. A passed generic gate is not silently promoted to a Samarmad-specific result.
| Gate | Result |
|---|---|
| benchmark criteria frozen | PASS |
| curved transfer heat rate | PASS |
| curved transfer pressure integral and force | PASS |
| generic calculix worker image | PASS |
| generic openfoam cht | PASS |
| generic openfoam study | PASS |
| generic three level fea | PASS |
| pche calculix geometry | NOT_RUN |
| pche curved cht | NOT_RUN |
| pche openfoam | NOT_RUN |
| prediction bundle hash and verify | PASS |
| publication reference validation | NOT_ESTABLISHED |
| publication source eligibility | OPEN |
| source custody reference separation | PASS |
| source input and synthetic estimate packet | PASS |
| trusted external timestamp | OPEN |
Synthetic operating-point packet
These values are synthetic completions used to exercise the prebenchmark contract. They are not experimental observations.
| Re | Velocity (m/s) | Δp (Pa) | Heat duty (W) | Effectiveness |
|---|---|---|---|---|
| 300 | 0.197 | 650.2 | 734.6 | 0.866 |
| 600 | 0.394 | 1300.4 | 1295.8 | 0.764 |
| 900 | 0.591 | 1950.6 | 1738.7 | 0.683 |
| 1200 | 0.789 | 2600.9 | 2097.0 | 0.618 |
| 1500 | 0.986 | 3251.1 | 2392.8 | 0.564 |
| 1900 | 1.249 | 4118.0 | 2715.5 | 0.506 |
Open gates and next step
The following items remain open in this revision: pche calculix geometry, pche curved cht, pche openfoam, publication reference validation, publication source eligibility, trusted external timestamp.
To turn this into a scored paper benchmark, Aero still needs a rights-cleared source-custody record, complete pre-result inputs, sealed pointwise measurements and uncertainty, corrugated PCHE CAD, three target-specific OpenFOAM CHT levels, PCHE-specific CalculiX mapping, and an external timestamp before the reference is revealed.
Source custody status: CONDITIONAL_LOCAL_SYNTHETIC_ONLY. The source is linked for attribution only; no full text or adapted publication measurements are redistributed here.