کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4993931 1458027 2017 13 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Entropy generation analysis in MHD mixed convection of hybrid nanofluid in an open cavity with a horizontal channel containing an adiabatic obstacle
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Entropy generation analysis in MHD mixed convection of hybrid nanofluid in an open cavity with a horizontal channel containing an adiabatic obstacle
چکیده انگلیسی
A computational analysis has been performed in a horizontal channel with an open cavity filled with hybrid nanofluid of Al2O3-Cu-water having an adiabatic square obstacle inside. The bottom wall of the cavity is taken as hot while all the rest walls of the channel and cavity are adiabatic except the left end of the channel which is taken as cold. Three different vertical locations of the obstacle are considered. The governing partial differentials equations are solved via Galerkin finite element method in space and the Crank-Nicolson in time. Newton method is utilized to cope with discretized nonlinear systems of equations and the Gaussian elimination method has been applied to solve the associated linear subproblems in each nonlinear iteration. The emerging parameters are Richardson number (0.01⩽Ri⩽20), nanoparticle volume fraction (0.0⩽ϕ⩽0.04),(1⩽Re⩽200) and Hartmann number (0⩽Ha⩽100). Calculations of the streamlines, isotherms, average Nusselt number and entropy generation will be the main focus of interest in this study.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Heat and Mass Transfer - Volume 114, November 2017, Pages 1054-1066
نویسندگان
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