Electromagnetohydrodynamic (EMHD) micropump of Jeffrey fluids through two parallel microchannels with corrugated walls
Electromagnetohydrodynamic (EMHD) micropump of Jeffrey fluids through two parallel microchannels with corrugated walls
复制标题
Jeffrey 流体的电磁流体动力 (EMHD) 微泵通过两个具有波纹壁的平行微通道
DOI：
10.1088/0022-3727/48/8/085501
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发表时间：
2015-03-04
影响因子：
3.4
通讯作者：
Jian, Yongjun
中科院分区：
文献类型：
--
作者：
Si, Dongqing;Jian, Yongjun
采用摄动法，给出了导电、不可压缩、粘性 Jeffrey 流体在两个带波纹壁的狭缝微平行板之间的电磁流体动力 (EMHD) 流动的速度和体积流量的近似解析解。两个壁的波纹被描述为同相或半周期异相的小振幅周期性正弦波。通过数值计算分析了波纹对EMHD流速的影响。速度分布和平均速度参数的变化及其对雷诺数Re、哈特曼数Ha、壁扰动的无量纲波数λ、无量纲弛豫时间λ1ω和延迟时间λ2ω的依赖性被图形化地解释。
By employing the perturbation method, the approximate analytical solutions of velocity and volume flow rate are presented for electromagnetohydrodynamic (EMHD) flow of an electrically conducting, incompressible and viscous Jeffrey fluid between two slit microparallel plates with corrugated walls. The corrugations of the two walls are described as periodic sinusoidal waves with small amplitude either in phase or half-period out of phase. The effects of the corrugations on the EMHD flow velocity are analyzed by using numerical computation. The variations of velocity profiles and mean velocity parameter and their dependences on the Reynolds number Re, Hartmann number Ha, dimensionless wave number λ of the wall perturbation, the dimensionless relaxation time λ1ω and retardation time λ2ω are explained graphically.