科尔莫戈罗夫-阿诺德网络模型的Kriging加速了在基快反应堆中发现氧气控制策略的发现
Shiwei Wang1,2, Jiajie Chen1,2, Xiaojing Liu3,4
1School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, China.
Nature communications
|November 5, 2025
概括
一个新的K2K替代模型准确地预测了以为基础的快速反应堆 (LFR) 中的-斯木腐蚀. 这使得新的氧气控制策略可用于安全的长期LFR运行,这对于净零排放至关重要.
科学领域:
- 核工程 核工程是指核工程.
- 材料科学 材料科学 材料科学
背景情况:
- 基于的快速反应堆 (LFR) 是净零排放和第四代核技术的关键.
- 低压电路的商业化面临着由 - 斯木 (LBE) 引起的外腐蚀带来的挑战.
- 活性氧控制显示出有希望的结果,但由于复杂的多物理和计算成本,缺乏长期验证.
研究的目的:
- 开发一种高保真替代模型,用于预测LFR中LBE诱导的外腐蚀.
- 为了识别覆盖式故障机制,并优化氧气控制策略LFRs.
- 探索K2K模型在分析能源系统中的多物理行为方面的潜力.
主要方法:
- 介绍了K2K (Kriging to Kolmogorov-Arnold Networks),这是一个具有预测-校正结构的高精度替代模型.
- 整合了一个梯度惩罚运算符,以提高模型的准确性,并防止非物理的推算.
- 在LBE条件下应用K2K模型来识别和定位层故障机制.
主要成果:
- K2K模型有效地模拟了高保真度和精度的LBE诱导的外腐蚀.
- 确定了特定的外故障机制及其位置.
- 开发了一个强大的氧气度控制策略,定义了可行的范围和最佳值,用于LFR操作.
结论:
- K2K替代模型是了解和减轻LFR中LBE腐蚀的强大工具.
- 开发的氧气控制策略支持安全,可靠和长期的LFR运行.
- K2K建模显示出在先进能源系统中分析复杂的多物理现象的巨大潜力.
更多相关视频
相关概念视频
Nuclear Stability
22.8K
Protons and neutrons, collectively called nucleons, are packed together tightly in a nucleus. With a radius of about 10−15 meters, a nucleus is quite small compared to the radius of the entire atom, which is about 10−10 meters. Nuclei are extremely dense compared to bulk matter, averaging 1.8 × 1014 grams per cubic centimeter. If the earth’s density were equal to the average nuclear density, the earth’s radius would be only about 200 meters.
To hold positively charged protons together...
To hold positively charged protons together...
22.8K
Nuclear Transmutation
20.4K
Nuclear transmutation is the conversion of one nuclide into another. It can occur by the radioactive decay of a nucleus, or the reaction of a nucleus with another particle. The first manmade nucleus was produced in Ernest Rutherford’s laboratory in 1919 by a transmutation reaction, the bombardment of one type of nuclei with other nuclei or with neutrons. Rutherford bombarded nitrogen-14 atoms with high-speed α particles from a natural radioactive isotope of radium and observed...
20.4K
Oxygen Requirements and Growth Patterns
1.2K
Microorganisms exhibit diverse oxygen requirements and growth patterns driven by their metabolic strategies and environmental adaptations. Oxygen, while essential for many organisms, can also be toxic under certain conditions, shaping how microorganisms grow and survive.Oxygen Requirements of MicroorganismsMicroorganisms are classified based on their ability to use or tolerate oxygen:● Obligate aerobes like Mycobacterium tuberculosis need oxygen for energy production, as it serves as the...
1.2K
Nuclear Power
9.3K
Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
9.3K
Redox Equilibria: Overview
1.5K
A reduction-oxidation reaction is commonly called a redox reaction. In a redox reaction, electrons are transferred from one species to another rather than being shared between or among atoms. The reducing agent or reductant is the species that loses electrons and gets oxidized in the process. The species that gains electrons and gets reduced in the process is the oxidizing agent or oxidant. Redox reactions are represented as two separate equations called half-reactions, where one equation...
1.5K
Nuclear Fission
12.2K
Many heavier elements with smaller binding energies per nucleon can decompose into more stable elements that have intermediate mass numbers and larger binding energies per nucleon—that is, mass numbers and binding energies per nucleon that are closer to the “peak” of the binding energy graph near 56. Sometimes neutrons are also produced. This decomposition of a large nucleus into smaller pieces is called fission. The breaking is rather random with the formation of a large...
12.2K


