Review, numerical validation, and experiment verification for Definite solution Analogy Theory (DSAT) in thermal-hydraulic scaling

• Published in: Applied thermal engineering 2024-12, Vol.257, p.124463, Article 124463
• Main Authors: Li, Xinyu, Zhang, Dalin, Jiang, Dianqiang, Zhou, Xingguang, Lv, Xindi, Tian, Wenxi, Qiu, Suizheng, Su, G.H.
• Format: Article
• Language: English
• Subjects: Definite Solution Analogy Theory; FuSTAR; Scaling
• ISSN: 1359-4311
• DOI: 10.1016/j.applthermaleng.2024.124463

•Definite Solution Analogy Theory framework based on partial differential equations for scaling.•Numerical experiment and Thermal-hydraulic experiment to prove the precision and reliability of Definite Solution Analogy Theory.•Definite Solution Analogy Theory can give finer distortion of scaling and different similarity criterion.•In dimensionless partial differential equations, the influence of definite solution conditions on similarity may be greater than that of dimensionless parameters.•The suitable turbulence model does not affect the scaling results based on the laminar flow model. The new generation of reactor technology, Fluoride-Salt-cooled high-Temperature Advanced Reactor (FuSTAR), is primarily intended for use in remote, underground, and arid areas. The design of the heat transport system and Passive Residual Heat Removal System (PRHRS) for FuSTAR has been completed, but verification is still pending. This study utilized the Definite Solution Analogy Theory (DSAT) for scaling analysis and constructed a scaling experiment platform to ensure accurate scaling and experimental verification. DSAT was validated through numerical simulation and experimental results, demonstrating the similarity of physical fields in dimensionless space between the prototype and experiment under the DSAT framework. Steady-state experiment results indicate that the PRHRS prototype can effectively remove over 1 % of decay heat from the total thermal power. Transient experiment results show that the maximum deviation of dimensionless solutions is less than 4 %, confirming the high accuracy of DSAT and demonstrating that PRHRS based on this framework can efficiently remove decay heat in the reactor. This work contributes to extending the scaling method for thermal–hydraulic systems in high dimensional space and transient conditions.