BUONGIORNO'S NANOFLUID MODEL FOR MIXED CONVECTION FLOW OVER A VERTICAL POROUS WEDGE WITH CONVECTIVE BOUNDARY CONDITIONS

被引:6
|
作者
Ahmed, Sameh E. [1 ,2 ]
Mandy, A. [2 ]
机构
[1] King Khalid Univ, Fac Sci, Dept Math, Abha 62529, Saudi Arabia
[2] South Valley Univ, Fac Sci, Math Dept, Qena, Egypt
关键词
Buongiorno; wedge; porous; nanofluid; mixed; convective boundary condition; HEAT-TRANSFER; LAYER-FLOW; NATURAL-CONVECTION; THERMAL-CONDUCTIVITIES; MHD FLOW; SURFACE; PLATE; ENCLOSURE; TRANSPORT; CYLINDER;
D O I
10.1615/JPorMedia.2020028850
中图分类号
O414.1 [热力学];
学科分类号
摘要
An exploration of the state of mixed convection flow due to an isothermal vertical wedge submersed in saturated porous medium utilizing Buongiorno's nanofluid paradigm is the primary intention of our research. In this pioneering investigation, Buongiorno's nanofluid model that encompasses the effects of both Brownian motion and thermophoresis is employed. The paradigm regards the case in which the nanofluid particle fraction on the boundary layer is passively rather than actively controlled. The wall of the wedge is submersed in a uniform porous medium, and the convective boundary condition has been employed over the wedge wall. Upon the Oberbeck-Boussinesq approximation and non-similarity transformation, the nonlinear set equations are obtained and tackled numerically by using the R.K. Gill and shooting method. A parametric study of the entire flow regime is procured to clarify the effects of the controlled parameters such as: wedge angle parameter M (0 <= M <= 1), buoyancy ratio parameter Nr (-1 <= Nr <= 1), mixed convection parameter xi (0 <= xi <= 1), Biot number Bi (0.1 <= Bi <= infinity), Brownian motion parameter Nb (0.4 <= Nb <= 1.2), thermophoresis parameter Nt (0.1 <= Nt <= 1), and Lewis number Le (1 <= Le <= 10); the results are likened with the available data in the open literature and detected to be in very good harmony. The prominent features of the achieved outcome have been construed and depicted.
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页码:1001 / 1014
页数:14
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