{"title":"Constructal design of two-stage combined T-Y-shaped fin considering minimization of maximum thermal resistance","authors":"Wenlong Zhang , Lingen Chen , Huijun Feng , Yanlin Ge","doi":"10.1016/j.tsep.2025.103394","DOIUrl":null,"url":null,"abstract":"<div><div>A two-stage combined T-Y-shaped fin model is established in present study. According to the constructal theory, the model structure is optimized with goal of minimizing maximum dimensionless thermal resistance (MDTR). By releasing degree-of-freedoms (DOFs) one by one, the optimal results under optimizations with 1-DOF to 6-DOF and the temperature distributions corresponding to optimal constructs are obtained. The optimal results with different DOF optimizations are compared and analyzed. The results show that the minimum MDTR of fins decreases from 33.668 with 1-DOF optimization to 26.795 in 6-DOF optimization, with a decrease rate of 20.41%. Moreover, the influences of different DOFs on performance of fins are different, and the one-stage branched fin length–width ratio has greatest influence. Under the same conditions, the minimum MDTR of the two-stage combined T-Y-shaped fin is 33.69% lower than that of single-stage T-Y-shaped fin. Meanwhile, the minimum MDTR is reduced by 1.49% compared to T-Y-shaped fin with variable branched fin angle. It is worth noting that the minimum MDTR of two-stage combined T-Y-shaped fin is greater than that of twice Y-shaped fin, and influence of cavity structure on the fin performance needs to be further studied and discussed.</div></div>","PeriodicalId":23062,"journal":{"name":"Thermal Science and Engineering Progress","volume":"60 ","pages":"Article 103394"},"PeriodicalIF":5.1000,"publicationDate":"2025-02-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Thermal Science and Engineering Progress","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2451904925001842","RegionNum":3,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
A two-stage combined T-Y-shaped fin model is established in present study. According to the constructal theory, the model structure is optimized with goal of minimizing maximum dimensionless thermal resistance (MDTR). By releasing degree-of-freedoms (DOFs) one by one, the optimal results under optimizations with 1-DOF to 6-DOF and the temperature distributions corresponding to optimal constructs are obtained. The optimal results with different DOF optimizations are compared and analyzed. The results show that the minimum MDTR of fins decreases from 33.668 with 1-DOF optimization to 26.795 in 6-DOF optimization, with a decrease rate of 20.41%. Moreover, the influences of different DOFs on performance of fins are different, and the one-stage branched fin length–width ratio has greatest influence. Under the same conditions, the minimum MDTR of the two-stage combined T-Y-shaped fin is 33.69% lower than that of single-stage T-Y-shaped fin. Meanwhile, the minimum MDTR is reduced by 1.49% compared to T-Y-shaped fin with variable branched fin angle. It is worth noting that the minimum MDTR of two-stage combined T-Y-shaped fin is greater than that of twice Y-shaped fin, and influence of cavity structure on the fin performance needs to be further studied and discussed.
期刊介绍：
Thermal Science and Engineering Progress (TSEP) publishes original, high-quality research articles that span activities ranging from fundamental scientific research and discussion of the more controversial thermodynamic theories, to developments in thermal engineering that are in many instances examples of the way scientists and engineers are addressing the challenges facing a growing population – smart cities and global warming – maximising thermodynamic efficiencies and minimising all heat losses. It is intended that these will be of current relevance and interest to industry, academia and other practitioners. It is evident that many specialised journals in thermal and, to some extent, in fluid disciplines tend to focus on topics that can be classified as fundamental in nature, or are ‘applied’ and near-market. Thermal Science and Engineering Progress will bridge the gap between these two areas, allowing authors to make an easy choice, should they or a journal editor feel that their papers are ‘out of scope’ when considering other journals. The range of topics covered by Thermal Science and Engineering Progress addresses the rapid rate of development being made in thermal transfer processes as they affect traditional fields, and important growth in the topical research areas of aerospace, thermal biological and medical systems, electronics and nano-technologies, renewable energy systems, food production (including agriculture), and the need to minimise man-made thermal impacts on climate change. Review articles on appropriate topics for TSEP are encouraged, although until TSEP is fully established, these will be limited in number. Before submitting such articles, please contact one of the Editors, or a member of the Editorial Advisory Board with an outline of your proposal and your expertise in the area of your review.
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