{"title":"Core loading optimization of Apsara-U research reactor using differential evolution algorithm","authors":"Y.S. Rana, Tej Singh","doi":"10.1016/j.nucengdes.2025.113980","DOIUrl":null,"url":null,"abstract":"<div><div>A discrete differential evolution algorithm (DE) has been applied for optimizing core loading of Apsara-U research reactor. The objective is to maximize the core excess reactivity by restricting the maximum power of a fuel assembly to 173 kW. First, calculations were performed to verify the optimum values of mutation scale factor and crossover rate given in the literature. Subsequently, DE search was performed up to 500 generations with the population size of 10. It is found that the reactivity reaches its maximum value after 350 generations. The results show that, for a given core configuration, it is possible to obtain loading patterns which provide higher reactivity gain compared to the implemented pattern.</div></div>","PeriodicalId":19170,"journal":{"name":"Nuclear Engineering and Design","volume":"436 ","pages":"Article 113980"},"PeriodicalIF":2.1000,"publicationDate":"2025-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Nuclear Engineering and Design","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0029549325001578","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2025/3/7 0:00:00","PubModel":"Epub","JCR":"Q1","JCRName":"NUCLEAR SCIENCE & TECHNOLOGY","Score":null,"Total":0}
引用次数: 0
Abstract
A discrete differential evolution algorithm (DE) has been applied for optimizing core loading of Apsara-U research reactor. The objective is to maximize the core excess reactivity by restricting the maximum power of a fuel assembly to 173 kW. First, calculations were performed to verify the optimum values of mutation scale factor and crossover rate given in the literature. Subsequently, DE search was performed up to 500 generations with the population size of 10. It is found that the reactivity reaches its maximum value after 350 generations. The results show that, for a given core configuration, it is possible to obtain loading patterns which provide higher reactivity gain compared to the implemented pattern.
期刊介绍：
Nuclear Engineering and Design covers the wide range of disciplines involved in the engineering, design, safety and construction of nuclear fission reactors. The Editors welcome papers both on applied and innovative aspects and developments in nuclear science and technology.
Fundamentals of Reactor Design include:
• Thermal-Hydraulics and Core Physics
• Safety Analysis, Risk Assessment (PSA)
• Structural and Mechanical Engineering
• Materials Science
• Fuel Behavior and Design
• Structural Plant Design
• Engineering of Reactor Components
• Experiments
Aspects beyond fundamentals of Reactor Design covered:
• Accident Mitigation Measures
• Reactor Control Systems
• Licensing Issues
• Safeguard Engineering
• Economy of Plants
• Reprocessing / Waste Disposal
• Applications of Nuclear Energy
• Maintenance
• Decommissioning
Papers on new reactor ideas and developments (Generation IV reactors) such as inherently safe modular HTRs, High Performance LWRs/HWRs and LMFBs/GFR will be considered; Actinide Burners, Accelerator Driven Systems, Energy Amplifiers and other special designs of power and research reactors and their applications are also encouraged.
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