Effect of Magnetic Field on Forced Convection between Two Nanofluid Laminar Flows in a Channel

作     者：Afrasiab Raisi Ahmad Qanbary 

作者机构：Engineering Faculty Shahrekord University 

出 版 物：《Chinese Journal of Mechanical Engineering》 (中国机械工程学报（英文版）)

年 卷 期：2016年第29卷第6期

页      面：1235-1243页

核心收录：

学科分类：080701[工学-工程热物理] 07[理学] 070205[理学-凝聚态物理] 08[工学] 0807[工学-动力工程及工程热物理] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

主　　题：magnetic field forced convection nanofluid membrane channel 

摘      要：This paper provides a numerical study of forced convection between hot and cold nanofluid laminar flows that are separated by a thin membrane, in a horizontal channel. Outer surface of channels＇ walls are thermally insulated and divide into two parts; namely NMP and MP. NMP is the channel＇s wall from the entrance section to the middle section of channel that is not influenced by magnetic field. MP is the channel＇s wall from the middle section to the exit section of channel which is influenced by a uniform-strength transverse magnetic field. The governing equations for both hot and cold flows are solved together using the SIMPLE algorithm. The effects of pertinent parameters, such as Reynolds number （10 ≤ Re ≤500）, Hartman number （0 ≤Ha ≤60） and the solid volume fraction of copper nano-particles （0≤φ≤0.05）, are studied. The results are reported in terms of streamlines, isotherms, velocity and temperature profiles and local and average Nusselt number. The results of the numerical simulation indicate that the increase in Reynolds number and the solid volume fraction lead to increase in Nusselt number. Meanwhile, the results also show that the rate of heat transfer between the flows increases as the Hartmann number increases, especially at higher values of the Reynolds number.