Numerical simulation for magnetized non-isothermal nanofluid flow in hexagonal curved cavity with heated obstacle

IF 5.6 1区数学 Q1 MATHEMATICS, INTERDISCIPLINARY APPLICATIONS

Chaos Solitons & Fractals Pub Date : 2025-09-30 DOI:10.1016/j.chaos.2025.117265

Taqi A.M. Shatnawi , Aamir Abbas Khan , Sajjad Hussain , Shalan Alkarni

{"title":"Numerical simulation for magnetized non-isothermal nanofluid flow in hexagonal curved cavity with heated obstacle","authors":"Taqi A.M. Shatnawi , Aamir Abbas Khan , Sajjad Hussain , Shalan Alkarni","doi":"10.1016/j.chaos.2025.117265","DOIUrl":null,"url":null,"abstract":"<div><div>In numerous contexts, the behaviors of flow and heat transfer are considered to be intricate phenomena. The enhancement of thermal communication mechanisms due to the presence of nanoscale particles represents a significant area of research. The significance of free convection in fluids containing nanoparticles across various configurations and constraints cannot be overstated. This study investigates the flow characteristics of a natural convection nanofluid within a hexagon-shaped hollow featuring an internally heated cylinder. Simulations were conducted in the absence of a porous material and an inclined magnetic field. Physical issues are utilized to generate mathematical equations, which are subsequently resolved through the Galerkin weighted residual method within the framework of FEM formulation. The influence of various parameters such as Rayleigh numbers (<em>Ra</em>), Hartmann numbers (<em>Ha</em>), and the volume fraction of nanoparticles on both velocity and temperature. The analysis indicates that the Rayleigh number exhibits a significant increase in both the velocity profile and temperature at elevated values. In a similar manner, the magnetic parameter counteracts the velocity flow and increases the temperature for higher values. The magnetic effect demonstrates a significant outcome for various angles of inclination.</div></div>","PeriodicalId":9764,"journal":{"name":"Chaos Solitons & Fractals","volume":"201 ","pages":"Article 117265"},"PeriodicalIF":5.6000,"publicationDate":"2025-09-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Chaos Solitons & Fractals","FirstCategoryId":"100","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0960077925012780","RegionNum":1,"RegionCategory":"数学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"MATHEMATICS, INTERDISCIPLINARY APPLICATIONS","Score":null,"Total":0}

引用次数: 0

Abstract

In numerous contexts, the behaviors of flow and heat transfer are considered to be intricate phenomena. The enhancement of thermal communication mechanisms due to the presence of nanoscale particles represents a significant area of research. The significance of free convection in fluids containing nanoparticles across various configurations and constraints cannot be overstated. This study investigates the flow characteristics of a natural convection nanofluid within a hexagon-shaped hollow featuring an internally heated cylinder. Simulations were conducted in the absence of a porous material and an inclined magnetic field. Physical issues are utilized to generate mathematical equations, which are subsequently resolved through the Galerkin weighted residual method within the framework of FEM formulation. The influence of various parameters such as Rayleigh numbers (Ra), Hartmann numbers (Ha), and the volume fraction of nanoparticles on both velocity and temperature. The analysis indicates that the Rayleigh number exhibits a significant increase in both the velocity profile and temperature at elevated values. In a similar manner, the magnetic parameter counteracts the velocity flow and increases the temperature for higher values. The magnetic effect demonstrates a significant outcome for various angles of inclination.

查看原文本刊更多论文

磁化非等温纳米流体在带有加热障碍物的六边形弯曲腔内流动的数值模拟

在许多情况下，流动和传热行为被认为是复杂的现象。由于纳米级粒子的存在而增强热通信机制是一个重要的研究领域。在含有纳米颗粒的流体中，自由对流在各种构型和约束条件下的重要性怎么强调都不为过。本研究研究了自然对流纳米流体在带有内加热圆柱体的六边形空心内的流动特性。在没有多孔材料和倾斜磁场的情况下进行了模拟。利用物理问题生成数学方程，然后在有限元公式框架内通过Galerkin加权残差法求解。瑞利数（Ra）、哈特曼数（Ha）和纳米颗粒体积分数等参数对速度和温度的影响。分析表明，在升高数值时，瑞利数在速度剖面和温度上都表现出显著的增加。以类似的方式，磁性参数抵消了速度流并增加了较高值的温度。磁效应对不同的倾角都有显著的影响。

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

Chaos Solitons & Fractals 物理-数学跨学科应用

CiteScore

13.20

自引率

10.30%

发文量

1087

审稿时长

9 months

期刊介绍： Chaos, Solitons & Fractals strives to establish itself as a premier journal in the interdisciplinary realm of Nonlinear Science, Non-equilibrium, and Complex Phenomena. It welcomes submissions covering a broad spectrum of topics within this field, including dynamics, non-equilibrium processes in physics, chemistry, and geophysics, complex matter and networks, mathematical models, computational biology, applications to quantum and mesoscopic phenomena, fluctuations and random processes, self-organization, and social phenomena.