Analysis of heat generation and viscous dissipation with thermal radiation on unsteady hybrid nanofluid flow over a sphere with double-stratification: Case of modified Buongiorno's model

IF 1.7 4区综合性期刊 Q2 MULTIDISCIPLINARY SCIENCES

Journal of Radiation Research and Applied Sciences Pub Date : 2024-10-14 DOI:10.1016/j.jrras.2024.101146

Zafar Mahmood , Khadija Rafique , Mushtaq Ahmad Ansari , Adnan , Umar Khan , Abhinav Kumar , Hamiden Abd El-Wahed Khalifa , Haifa Alqahtani

{"title":"Analysis of heat generation and viscous dissipation with thermal radiation on unsteady hybrid nanofluid flow over a sphere with double-stratification: Case of modified Buongiorno's model","authors":"Zafar Mahmood , Khadija Rafique , Mushtaq Ahmad Ansari , Adnan , Umar Khan , Abhinav Kumar , Hamiden Abd El-Wahed Khalifa , Haifa Alqahtani","doi":"10.1016/j.jrras.2024.101146","DOIUrl":null,"url":null,"abstract":"<div><h3>Purpose</h3><div>This work uses entropy generation analysis to numerically analyze magnetohydrodynamics (MHD) unsteady flow, heat and mass transfer. The study considers changing viscosity, thermal radiation, viscous dissipation, mass suction, heat generation, and stratification processes in a hybrid nanofluid around a spinning sphere. A two-phase nanofluid flow model (Buongiorno model<strong>)</strong> is used to tackle the current challenge. Both the free stream velocity and the sphere's angular velocity changed over time.</div></div><div><h3>Design/methodology/approach</h3><div>The case study's complicated partial differential equations are transformed into simpler ordinary differential equations utilizing similarity transformation. Implementing the fourth-order Runge-Kutta Fehlberg method with a shooting scheme in MATHEMATICA has allowed us to get numerical solutions for ordinary differential structures.</div></div><div><h3>Findings</h3><div>The many aspects of these regulated physical characteristics have been elucidated and thoroughly examined via the use of charts and tables. For increasing values of unsteadiness parameter, the velocity profiles in the x-direction grow while they decrease in the z-direction. On the other hand, the temperature profile exhibits a dual pattern, and the concentration profile decreases. As the chemical reaction parameter climbs from 0.25 to 1.0, the Sherwood number for the nanofluid rises by 6721.39% and for the hybrid nanofluid, 3818.9%. When Nr increases from 0.2 to 0.8, nanofluid Nusselt number climbs 22.5% and hybrid nanofluid's Nusselt number rises 21.9%. The Brinkmann number and nanoparticle volume percentage are strongly associated with entropy production. Entropy generation is dual for the temperature difference, magnetic, radiation, and changeable viscosity parameters. The findings are also compared to those from the existing literature and are in excellent agreement with them.</div></div>","PeriodicalId":16920,"journal":{"name":"Journal of Radiation Research and Applied Sciences","volume":"17 4","pages":"Article 101146"},"PeriodicalIF":1.7000,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Radiation Research and Applied Sciences","FirstCategoryId":"103","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1687850724003303","RegionNum":4,"RegionCategory":"综合性期刊","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"MULTIDISCIPLINARY SCIENCES","Score":null,"Total":0}

引用次数: 0

Abstract

Purpose

This work uses entropy generation analysis to numerically analyze magnetohydrodynamics (MHD) unsteady flow, heat and mass transfer. The study considers changing viscosity, thermal radiation, viscous dissipation, mass suction, heat generation, and stratification processes in a hybrid nanofluid around a spinning sphere. A two-phase nanofluid flow model (Buongiorno model) is used to tackle the current challenge. Both the free stream velocity and the sphere's angular velocity changed over time.

Design/methodology/approach

The case study's complicated partial differential equations are transformed into simpler ordinary differential equations utilizing similarity transformation. Implementing the fourth-order Runge-Kutta Fehlberg method with a shooting scheme in MATHEMATICA has allowed us to get numerical solutions for ordinary differential structures.

Findings

The many aspects of these regulated physical characteristics have been elucidated and thoroughly examined via the use of charts and tables. For increasing values of unsteadiness parameter, the velocity profiles in the x-direction grow while they decrease in the z-direction. On the other hand, the temperature profile exhibits a dual pattern, and the concentration profile decreases. As the chemical reaction parameter climbs from 0.25 to 1.0, the Sherwood number for the nanofluid rises by 6721.39% and for the hybrid nanofluid, 3818.9%. When Nr increases from 0.2 to 0.8, nanofluid Nusselt number climbs 22.5% and hybrid nanofluid's Nusselt number rises 21.9%. The Brinkmann number and nanoparticle volume percentage are strongly associated with entropy production. Entropy generation is dual for the temperature difference, magnetic, radiation, and changeable viscosity parameters. The findings are also compared to those from the existing literature and are in excellent agreement with them.

查看原文本刊更多论文

双层结构球体上非稳定混合纳米流体流动的热量产生和粘性耗散与热辐射分析：修正的布昂奥诺模型案例

目的本研究利用熵生成分析对磁流体力学（MHD）非稳态流动、传热和传质进行数值分析。研究考虑了围绕旋转球体的混合纳米流体中的粘度变化、热辐射、粘性耗散、质量吸力、热量产生和分层过程。研究采用了两相纳米流体流动模型（Buongiorno 模型）来应对当前的挑战。自由流速度和球体角速度均随时间变化。设计/方法/途径利用相似性变换将案例研究中复杂的偏微分方程转换为较简单的常微分方程。通过在 MATHEMATICA 中使用四阶 Runge-Kutta Fehlberg 方法和射击方案，我们得到了常微分结构的数值解。随着不稳定性参数值的增大，X 方向的速度曲线会增大，而 Z 方向的速度曲线会减小。另一方面，温度曲线呈现出双重模式，浓度曲线则有所下降。当化学反应参数从 0.25 上升到 1.0 时，纳米流体的舍伍德数上升了 6721.39%，混合纳米流体的舍伍德数上升了 3818.9%。当 Nr 从 0.2 增加到 0.8 时，纳米流体的努塞尔特数上升了 22.5%，混合纳米流体的努塞尔特数上升了 21.9%。布林克曼数和纳米粒子体积百分比与熵的产生密切相关。熵的产生与温差、磁性、辐射和可变粘度参数有关。研究结果还与现有文献进行了比较，结果非常吻合。

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

Journal of Radiation Research and Applied Sciences MULTIDISCIPLINARY SCIENCES-

自引率

5.90%

发文量

130

审稿时长

16 weeks

期刊介绍： Journal of Radiation Research and Applied Sciences provides a high quality medium for the publication of substantial, original and scientific and technological papers on the development and applications of nuclear, radiation and isotopes in biology, medicine, drugs, biochemistry, microbiology, agriculture, entomology, food technology, chemistry, physics, solid states, engineering, environmental and applied sciences.