A comprehensive review on natural convection in trapezoidal cavities with mono and hybrid nanofluids

Q1 Chemical Engineering

International Journal of Thermofluids Pub Date : 2025-04-21 DOI:10.1016/j.ijft.2025.101226

Farhan Lafta Rashid , Zainab Abdul Karim Alkhekany , Muhammad Asmail Eleiwi , Abdallah Bouabidi , Shabbir Ahmad , Atef Chibani , Mohamed Kezzar , Saif Ali Kadhim , Ali Habeeb Askar , Karrar A. Hammoodi

{"title":"A comprehensive review on natural convection in trapezoidal cavities with mono and hybrid nanofluids","authors":"Farhan Lafta Rashid , Zainab Abdul Karim Alkhekany , Muhammad Asmail Eleiwi , Abdallah Bouabidi , Shabbir Ahmad , Atef Chibani , Mohamed Kezzar , Saif Ali Kadhim , Ali Habeeb Askar , Karrar A. Hammoodi","doi":"10.1016/j.ijft.2025.101226","DOIUrl":null,"url":null,"abstract":"<div><div>This review synthesises advancements in natural convection within trapezoidal cavities using mono- and hybrid nanofluids, emphasising their geometric advantages for thermal management. Trapezoidal cavities promote asymmetric flow patterns that enhance heat transfer compared to conventional geometries, as demonstrated in applications like solar absorbers and electronic cooling. Through analysis of 50+ previous studies, the review identifies key trends: Hybrid nanofluids like Cu-Al₂O₃/water consistently outperform mono nanofluids in Nusselt number improvement, with gains exceeding 20 %. Inclined walls mitigate stagnant flow zones, though exact reduction rates vary with aspect ratio and nanoparticle concentration. Magnetic fields and porous media further modulate thermal performance, but trade-offs emerge between conductivity enhancement and viscosity penalties. This review provides a framework to optimise trapezoidal cavities with nanofluids for industrial deployment.</div></div>","PeriodicalId":36341,"journal":{"name":"International Journal of Thermofluids","volume":"27 ","pages":"Article 101226"},"PeriodicalIF":0.0000,"publicationDate":"2025-04-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Thermofluids","FirstCategoryId":"1085","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2666202725001739","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"Chemical Engineering","Score":null,"Total":0}

引用次数: 0

Abstract

This review synthesises advancements in natural convection within trapezoidal cavities using mono- and hybrid nanofluids, emphasising their geometric advantages for thermal management. Trapezoidal cavities promote asymmetric flow patterns that enhance heat transfer compared to conventional geometries, as demonstrated in applications like solar absorbers and electronic cooling. Through analysis of 50+ previous studies, the review identifies key trends: Hybrid nanofluids like Cu-Al₂O₃/water consistently outperform mono nanofluids in Nusselt number improvement, with gains exceeding 20 %. Inclined walls mitigate stagnant flow zones, though exact reduction rates vary with aspect ratio and nanoparticle concentration. Magnetic fields and porous media further modulate thermal performance, but trade-offs emerge between conductivity enhancement and viscosity penalties. This review provides a framework to optimise trapezoidal cavities with nanofluids for industrial deployment.

查看原文本刊更多论文

单纳米流体和混合纳米流体在梯形空腔中的自然对流综述

这篇综述综合了使用单一和混合纳米流体在梯形腔内自然对流方面的进展，强调了它们在热管理方面的几何优势。与传统的几何形状相比，梯形腔促进了不对称的流动模式，增强了传热，这在太阳能吸收器和电子冷却等应用中得到了证明。通过分析50多个先前的研究，该综述确定了关键趋势：混合纳米流体，如Cu-Al₂O₃/水，在努塞尔数改善方面始终优于单一纳米流体，收益超过20%。倾斜壁面可以缓解停滞流动区，但确切的减少率随长径比和纳米颗粒浓度而变化。磁场和多孔介质进一步调节热性能，但在导电性增强和粘度损失之间存在权衡。本文综述提供了一个框架，以优化梯形腔与纳米流体的工业部署。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊