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

被引：15

作者：

Xu, Xiaoqin ^{[1
,2
]}

Chen, Shumei ^{[1
]}

机构：

[1] Fuzhou Univ, Sch Mech Engn & Automat, Fuzhou 350116, Fujian, Peoples R China

[2] Fujian Chuanzheng Commun Coll, Dept Automobile Applicat Engn, Fuzhou 350007, Fujian, Peoples R China

来源：

BOUNDARY VALUE PROBLEMS | 2017年

关键词：

flow separation; MHD; nanofluid; permeable wedge; variable viscosity; FALKNER-SKAN FLOW; HEAT-TRANSFER; MASS-TRANSFER; CASSON FLUID; POROUS WEDGE; INJECTION; SUCTION; SLIP;

D O I：

10.1186/s13661-017-0877-7

中图分类号：

O29 [应用数学];

学科分类号：

070104 ;

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.

引用

页数：13

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