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首页> 外文期刊>Journal of King Saud University >Explicit finite difference analysis of an unsteady MHD flow of a chemically reacting Casson fluid past a stretching sheet with Brownian motion and thermophoresis effects
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Explicit finite difference analysis of an unsteady MHD flow of a chemically reacting Casson fluid past a stretching sheet with Brownian motion and thermophoresis effects

机译：对具有化学反应的Casson流体流过拉伸片并具有布朗运动和热泳效应的非稳态MHD流动进行显式有限差分分析

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摘要

This study intends to elaborate the heat and mass transfer analysis of Casson nanofluid flow past a stretching sheet together with magnetohydrodynamics (MHD), thermal radiation and chemical reaction effects. The boundary layer approximations established the governing equations, i.e., time-subservient momentum, energy and diffusion balance equations. An explicit finite difference scheme was implemented as a numerical technique where Compaq Visual Fortran 6.6.a programming code is also developed for simulating the fluid flow system. In order to accurateness of the numerical technique, a stability and convergence analysis was carried out where the system was found converged at Prandtl number, Pr?≥?0.062 and Lewis number, Le?≥?0.025 when τ?=?0.0005, ΔX?=?0.8 and ΔY?=?0.2. The non-dimensional outcomes are apprehended here which rely on various physical parameters. The impression of these various physical parameters on momentum and thermal boundary layers along with concentration profiles are discussed and displayed graphically. In addition, the impact of system parameters on Cf, Nu and Sh profiles with streamlines and isothermal lines are also discussed.
机译：这项研究的目的是详细阐述卡森纳米流体流过拉伸片的传热和传质分析，以及磁流体动力学（MHD），热辐射和化学反应效应。边界层近似建立了控制方程，即时变动量，能量和扩散平衡方程。一个显式的有限差分方案被实现为一种数值技术，其中Compaq Visual Fortran 6.6。还开发了用于模拟流体系统的编程代码。为了使数值技术的准确性，进行了稳定性和收敛性分析，发现当τα＝α0.0005，ΔXα时，系统收敛于Prandtl数，Pr≥≥0.062和Lewis数，Le≥≥0.025。 ＝ 0.8，ΔY＝ 0.2。在此理解了无量纲的结果，它取决于各种物理参数。讨论并以图形方式显示了这些各种物理参数对动量和热边界层以及浓度分布的印象。此外，还讨论了系统参数对带有流线和等温线的Cf，Nu和Sh轮廓的影响。

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