Thermal performance and entropy generation analysis of hybrid nanofluids in a 3D cylindrical microtube: Implications for biomedical applications

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2025-02-15 DOI:10.1016/j.csite.2025.105873

Chenxu Duan , Hassan Roshani , Payam Jalili , Bahram Jalili , Irshad Ahmad , Qasem M Al-Mdallal , Pan Zhang

{"title":"Thermal performance and entropy generation analysis of hybrid nanofluids in a 3D cylindrical microtube: Implications for biomedical applications","authors":"Chenxu Duan , Hassan Roshani , Payam Jalili , Bahram Jalili , Irshad Ahmad , Qasem M Al-Mdallal , Pan Zhang","doi":"10.1016/j.csite.2025.105873","DOIUrl":null,"url":null,"abstract":"<div><div>This study presents a numerical analysis of transient natural convection, heat transfer, and entropy generation in a 3D cylindrical microtube containing a hybrid nanofluid with potential applications in biomedical engineering, such as targeted drug delivery and microfluidic heat exchangers. The analysis spans the time interval of 0 ≤ t ≤ 1.5 s and is based on dimensionless parameters, including Reynolds number, Richardson number, nanoparticle volume fraction, and Prandtl number. The hybrid nanofluid, composed of Al₂O₃ (5 %) and Cu (3 %) nanoparticles suspended in water, enhances flow and heat transfer characteristics, making it suitable for high-precision thermal management in micro-scale biomedical systems. Galerkin's finite element method is employed to solve the governing equations for flow behavior, temperature distribution, and entropy generation. Results indicate that increasing Reynolds and Richardson numbers intensifies flow and enhances velocity magnitudes, which is crucial for optimizing drug transport and thermal efficiency in microdevices. Additionally, entropy generation decreases with increasing Richardson number but rises with Reynolds number, while the average Nusselt number improves with both parameters, ensuring effective heat transfer performance in medical devices.</div></div>","PeriodicalId":9658,"journal":{"name":"Case Studies in Thermal Engineering","volume":"68 ","pages":"Article 105873"},"PeriodicalIF":6.4000,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Case Studies in Thermal Engineering","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214157X25001339","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"THERMODYNAMICS","Score":null,"Total":0}

引用次数: 0

Abstract

This study presents a numerical analysis of transient natural convection, heat transfer, and entropy generation in a 3D cylindrical microtube containing a hybrid nanofluid with potential applications in biomedical engineering, such as targeted drug delivery and microfluidic heat exchangers. The analysis spans the time interval of 0 ≤ t ≤ 1.5 s and is based on dimensionless parameters, including Reynolds number, Richardson number, nanoparticle volume fraction, and Prandtl number. The hybrid nanofluid, composed of Al₂O₃ (5 %) and Cu (3 %) nanoparticles suspended in water, enhances flow and heat transfer characteristics, making it suitable for high-precision thermal management in micro-scale biomedical systems. Galerkin's finite element method is employed to solve the governing equations for flow behavior, temperature distribution, and entropy generation. Results indicate that increasing Reynolds and Richardson numbers intensifies flow and enhances velocity magnitudes, which is crucial for optimizing drug transport and thermal efficiency in microdevices. Additionally, entropy generation decreases with increasing Richardson number but rises with Reynolds number, while the average Nusselt number improves with both parameters, ensuring effective heat transfer performance in medical devices.

查看原文本刊更多论文

求助全文

约1分钟内获得全文求助全文

来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.