3D MHD Natural Convective Flow Past a Uniformly Moving Porous Vertical Plate With Variable Sinusoidal Suction in the Slip Flow Regime

IF 2.8 Q2 THERMODYNAMICS
Heat Transfer Pub Date : 2024-11-14 DOI:10.1002/htj.23229
Nazibuddin Ahmed, Masuma Khanam
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引用次数: 0

Abstract

The current study aims to precisely solve the problem of three-dimensional (3D) magnetohydrodynamics (MHDs) natural convective flow of a viscous, incompressible, electrically conducting, nongray, optically thick fluid past a uniformly moving porous vertical plate with variable sinusoidal suction in the slip flow regime, considering thermal diffusion, diffusion-thermo, and thermal radiation. The incorporation of variable sinusoidal suction with variable amplitude in a slip flow regime in 3D MHD natural convective flow across a uniformly moving porous vertical plate is the novelty of the present work. Into the fluid region, a uniform transverse magnetic field is applied. Using Rosseland approximation, the flux appearing in the energy equation can be described. At the plate, solutal, thermal, and momentum slip are taken into account. The equations governing the flow model are solved using the asymptotic series expansion method. Since sinusoidal suction creates a 3D flow, the flow is 3D. Through figures and tables, we discuss the effects of different parameters on flow and transport characteristics. The magnetic body force, or Lorentz force, is produced when a magnetic field and fluid velocity interact. Because of this force's resistance to the flow, the fluid's velocity drops. A greater amount of mass diffusivity results in an increase in the concentration profile. An increase in thermal diffusivity raises the temperature field. The rate of heat transmission is reduced by higher thermal diffusivity. The mass transfer accelerates as fluid viscosity rises because the fluid's viscosity increases along with the Schmidt number. Skin friction reduces by 0.5% when the Soret number rises by one unit. The rate of mass transfer is enhanced with a growing Reynolds number or low viscosity.

三维MHD自然对流通过均匀移动的多孔垂直板与变正弦吸力在滑移流动状态
当前的研究旨在精确解决三维(3D)磁流体力学(mhd)自然对流问题,即粘性的、不可压缩的、导电的、非灰色的、光学厚的流体在滑移流动状态下通过具有变正弦吸力的均匀移动的多孔垂直板,同时考虑热扩散、扩散热和热辐射。在均匀移动的多孔垂直板上的三维MHD自然对流流动中,将变振幅的变正弦吸力引入滑移流态是本研究的新颖之处。在流体区域,施加均匀的横向磁场。利用Rosseland近似,可以描述能量方程中出现的通量。在板上,溶质、热和动量滑动被考虑在内。用渐近级数展开法求解了控制流模型的方程。由于正弦吸力产生三维流动,所以流动是三维的。通过图形和表格讨论了不同参数对流动和输运特性的影响。磁体力,或称洛伦兹力,是磁场和流体速度相互作用时产生的。由于这种力对流体的阻力,流体的速度下降。较大的质量扩散率会导致浓度分布的增加。热扩散系数的增加使温度场升高。较高的热扩散率降低了传热率。随着流体粘度的增加,传质速度加快,这是因为流体粘度随着施密特数的增加而增加。Soret数每增加一个单位,皮肤摩擦减少0.5%。随着雷诺数的增加或粘度的降低,传质速率也随之提高。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Heat Transfer
Heat Transfer THERMODYNAMICS-
CiteScore
6.30
自引率
19.40%
发文量
342
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