欧姆加热纳米流体中具有热跳现象移动表面的Falkner-Skan流分析  

Falkner-Skan flow analysis for ohmic heated nanofluid toward moving surface with thermal jump

作　　者：Ahmad SHAKEEL Farooq HINA Farooq MUHAMMAD 

机构地区：[1]Department of Mathematics and Statistics,Riphah International University,Islamabad 44000,Pakistan [2]Department of Pure and Applied Mathematics,The University of Haripur,Haripur 22600,Pakistan

出　　处：《Journal of Central South University》2023年第3期834-843,共10页中南大学学报（英文版）

摘　　要：边界层假设下的Falkner-Skan流分析因其在渗流、导热垫、热交换器、油层检测和地热分析等许多工业领域和过程中的广泛应用引起了越来越多的关注。本文主要研究了氧化石墨烯-水纳米流体的Falkner-Skan磁楔流。通过对驻点附近进行分析,研究了可拉伸壁面的速度和热滑现象,以及黏性耗散和欧姆加热对热传输的影响。利用同伦算法说明了相关参数与速度和热传输机理的关系,阐述了Nusselt数和表面摩擦因数的影响。结果表明:温度随着Brinkman数的增长而升高,进一步的热跳则使温度场减小;Hartmann数的增加使热场厚度增大,动量谱厚度减小。该研究对医疗、高温设施、热交换器和机械结构有极大意义。The analysis upon Falkner-Skan flows under the assumption of boundary layer has attracted more interests due to their widespread applications in the industrial fields and in many engineering processes,such as percolation,thermal pad,heat exchangers,oil bed retrieval,and geothermal analysis.Therefore,this article focuses on the Falkner-Skan hydromagnetic wedge flow of graphene oxide-water nanofluid.The analysis is adopted near the stagnation point.Velocity and thermal slip phenomena are examined in the stretchable wall.Viscous dissipation and ohmic heating impacts are employed in the exploration of heat transport.The problem is computed analytically via homotopy method.The results are illustrated by velocity and heat transport mechanism against relevant parameters.Impacts of Nusselt number and skin friction are mathematically elaborated.The results report that temperature grows by increasing Brinkman number.Further thermal jump decreases the temperature field.Increasing the rates of Hartmann number improves the thickness of thermal field,while increasing Hartmann number contracts the thickness of momentum profile.This research has considerable implications in medical treatment,devices of relatively high-temperature,heat exchangers,mechanical structures,etc.

关 键 词：Falkner-Skan流 纳米流体 磁流体动力 驻点 速度滑移 热滑 黏性耗散 欧姆加热 

分 类 号：TB383.1[一般工业技术—材料科学与工程]