Impact of the Shape Factor on Combined Buoyancy and Marangoni Convection in a Hybrid Nanofluid Filled Cylindrical Porous Annulus

IF 1.3 4区工程技术 Q2 ENGINEERING, AEROSPACE

Microgravity Science and Technology Pub Date : 2023-08-05 DOI:10.1007/s12217-023-10065-w

B. Kanimozhi, M. Muthtamilselvan, Ziyad A. Alhussain

引用次数: 0

Abstract

The ongoing research numerically examines the impact of the nanoparticle shape factor on the coupled Marangoni and buoyancy convection in a cylindrical porous annular region saturated with Ag-MgO/water hybrid nanofluid with magnetic effects. The internal wall of the annulus is considered to be hot, while the external wall is believed to be cold. The inner cylinder is fitted with a thin circular heated disc. To solve the non-dimensional governing equations, the finite difference approach with ADI, central differencing, and SOR technique is used. The major goal of the current study is to analyze the impact of the various shape factors on the Marangoni convection, magnetic field and nanoparticle volume fraction in the cylindrical annulus. The current study reveals that the spherical shaped nanoparticle outperforms in all the cases and \(\overline{Nu}\) hikes with the Marangoni number and declines with Hartmann number.

Abstract Image

查看原文本刊更多论文

形状因子对混合纳米流体填充圆柱形多孔环空中浮力和Marangoni对流的影响

正在进行的研究通过数值方法考察了纳米颗粒形状因子对具有磁效应的Ag-MgO/水混合纳米流体饱和的圆柱形多孔环形区域中耦合Marangoni和浮力对流的影响。环的内壁被认为是热的，而外壁被认为是冷的。内筒装有一个薄的圆形加热圆盘。为了求解无量纲控制方程，使用了ADI有限差分法、中心差分法和SOR技术。本研究的主要目的是分析各种形状因素对圆柱形环空中Marangoni对流、磁场和纳米颗粒体积分数的影响。目前的研究表明，球形纳米粒子在所有情况下都表现得更好，\(\overline{Nu}\)随着Marangoni数的增加而增加，随着Hartmann数的减少而下降。

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

Microgravity Science and Technology 工程技术-工程：宇航

CiteScore

3.50

自引率

44.40%

发文量

期刊介绍： Microgravity Science and Technology – An International Journal for Microgravity and Space Exploration Related Research is a is a peer-reviewed scientific journal concerned with all topics, experimental as well as theoretical, related to research carried out under conditions of altered gravity. Microgravity Science and Technology publishes papers dealing with studies performed on and prepared for platforms that provide real microgravity conditions (such as drop towers, parabolic flights, sounding rockets, reentry capsules and orbiting platforms), and on ground-based facilities aiming to simulate microgravity conditions on earth (such as levitrons, clinostats, random positioning machines, bed rest facilities, and micro-scale or neutral buoyancy facilities) or providing artificial gravity conditions (such as centrifuges). Data from preparatory tests, hardware and instrumentation developments, lessons learnt as well as theoretical gravity-related considerations are welcome. Included science disciplines with gravity-related topics are: − materials science − fluid mechanics − process engineering − physics − chemistry − heat and mass transfer − gravitational biology − radiation biology − exobiology and astrobiology − human physiology