辐射水基纳米流体在可渗透圆盘上的边界层滑动流动和热质传递:Darcy-Forchheimer模型和活化能

IF 5.6 1区 数学 Q1 MATHEMATICS, INTERDISCIPLINARY APPLICATIONS
Sohail Rehman
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引用次数: 0

摘要

本文重点研究了静态可渗透拉伸盘上的Bödewadt边界层流动问题,揭示了切线双曲纳米流体(THNF)流动的质量和传热特性。基于Darcy-Forchheimer渗透模型、活化能和热扩散现象的铜-水基THNF流在可渗透拉伸盘上的流动。主要目的是在速度滑移、非线性热辐射、活化能和熔化热效应的影响下,比较THNF传热传质特性的有效性。Darcy-Forchheimer模型在动量守恒中包含惯性和孔隙效应。在传热传质方程中考虑了Dufour-Soret、活化能和粘滞耗散。采用龙格-库塔(RK-4)方法对控制系统的方程组进行了计算求解。结果表明,孔隙度、流变性因素、滑移效应和Forchheimer参数会降低圆盘表面附近的流动剖面。随着Dufour、radiant、Weissenberg和Forchheimer数字的增加,热剖面上升,而与功率指数数字相矛盾的趋势被看到。随着Soret和活化能的增加,质量浓度曲线呈上升趋势,而随着化学反应速率的增加,质量浓度曲线呈上升趋势。铜纳米颗粒的加入改善了边界处的润滑效果,从而增加了表面摩擦。此外,当铜纳米材料的负载为3%时,Nusselt和Sherwood数有了实质性的增强。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Boundary layer slip flow and heat-mass transfer of radiated water based nanofluid over a permeable disk: Darcy-Forchheimer model and activation energy
This research highlights the Bödewadt boundary layer flow problem over a static permeable stretching disk uncovering the mass and heat transfer characteristics of tangent hyperbolic nanofluid (THNF) flow. The flow of a copper-water based THNF flow over a permeable stretching disk subject to Darcy-Forchheimer permeable model, activation energy and thermo-diffusion phenomena. The principal objective is to compare the effectiveness of heat-mass transfer features of THNF taking the velocity slip, nonlinear thermal radiation, activation energy, and melting heat effects. The Darcy-Forchheimer model incorporates inertial and porosity effects in momentum conservation. The Dufour-Soret, activation energy and viscous dissipation are considered in heat and mass transfer equations. The system of equations governing the system is solved computationally using the Runge-Kutta (RK-4) method. The results demonstrate that porosity, rheological factors, slip effects, and the Forchheimer parameter decline the flow profile near a disk surface. The thermal profile uplifts with Dufour, radiant, Weissenberg, and Forchheimer numbers, while a conflicting trend is seen against the power-index number. The mass concentration profile uplifts with Soret and activation energy, while the opposite result is seen against the chemical reaction rate. The addition of copper nanoparticles improves the lubricating effects at the boundary and thus increases skin friction. Furthermore, substantial enhancements in the Nusselt and Sherwood numbers occur with a 3 % load of copper nanomaterial.
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来源期刊
Chaos Solitons & Fractals
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.
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