Dual solutions of a boundary layer problem for MHD nanofluids through a permeable wedge with variable viscosity

被引：0
作者：
Xiaoqin Xu
Shumei Chen
机构：
[1] Fuzhou University,School of Mechanical Engineering and Automation
[2] Fujian Chuanzheng Communications College,Department of Automobile Application Engineering
来源：
Boundary Value Problems | / 2017卷
关键词：
flow separation; MHD; nanofluid; permeable wedge; variable viscosity;
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摘要：
Considering the effect of variable viscosity and the phenomenon of flow separation, the MHD Cu/Ag-Water nanofluids through a permeable wedge are investigated. The governing equations of flow and energy are reduced by similarity transformations and then solved numerically by the shooting method. It is found that dual solutions exist for negative pressure gradient. Compared with the Ag-Water nanofluid, the flow separation occurs later for injection, while it occurs earlier for suction in the Cu-Water nanofluid. The outcomes also specify that suction and small variable viscosity parameters delay the separation for the two nanofluids.
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