ICONE23-1727 Thermal-Hydraulic and Neutronic Analysis of a Re-Entrant Pressure-Channel Supercritical Water-cooled Reactor
Bibliographic record
Abstract
The objective of this paper is a study on thermal-hydraulic and neutronic aspects of a pressure-channel Supercritical Water-cooled Reactor (SCWR) with a focus on determination of fuel and cladding/sheath temperatures as well as a pressure drop across a fuel channel. With these objectives, a thermal-hydraulic code has been developed in MATLAB, which calculates a fuel centerline temperature, sheath temperature, coolant temperature and heat-transfer-coefficient profiles. The developed thermal-hydraulic code is coupled with a lattice code and a diffusion code. The neutronic codes were used in order to determine a power distribution inside the core. This paper presents a fuel centerline temperature of a 73-element fuel bundle with UO_2 as a reference fuel, while results are presented for high thermal-conductivity fuels such as UC and UO_2+SiC. The results show that the maximum fuel centerline temperature is significantly lower for high thermal-conductivity fuels. The total pressure drop varied between 108 to 133 kPa per fuel channel.
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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 | 0.001 | 0.001 |
| 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) | 0.002 | 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".