Natural convection flow of Cu-H2O nanofluid along a vertical wavy surface with uniform heat flux

2016 ◽  
Author(s):  
Farjana Habiba ◽  
Md. Mamun Molla ◽  
M. A. Hakim Khan
Keyword(s):  
Heat Flux ◽  
Natural Convection ◽  
Wavy Surface ◽  
Convection Flow ◽  
Uniform Heat Flux ◽  
Natural Convection Flow ◽  
Uniform Heat

Natural-Convection Flow Along a Vertical Complex Wavy Surface With Uniform Heat Flux

2007 ◽  
Vol 129 (10) ◽  
pp. 1403-1407 ◽  
Author(s):  
Mamun Molla ◽  
Anwar Hossain ◽  
Lun-Shin Yao
Keyword(s):  
Boundary Layer ◽  
Heat Flux ◽  
Natural Convection ◽  
Wavy Surface ◽  
Convection Flow ◽  
Convection Boundary Layer ◽  
Uniform Heat Flux ◽  
Fundamental Wave ◽  
Computational Domain ◽  
Uniform Heat

A natural-convection boundary layer along a vertical complex wavy surface with uniform heat flux has been investigated. The complex surface studied combines two sinusoidal functions, a fundamental wave and its first harmonic. Using a method of transformed coordinates, the boundary-layer equations are mapped into a regular and stationary computational domain. The transformed equations can then be solved straightforwardly by any number of numerical methods designed for regular and stationary geometries. In this paper, an implicit finite-difference method is used. The results were readily obtained on a personal computer. The numerical results demonstrate that the additional harmonic substantially alters the flow field and temperature distribution near the surface. The induced velocity normal to the y axis can substantially thicken the boundary layer, implying that its growth is not due solely to the momentum and thermal diffusion normal to the y axis along a wavy surface.

scholarly journals Heat transfer in natural convection flow of nanofluid along a vertical wavy plate with variable heat flux

2019 ◽  
Vol 23 (1) ◽  
pp. 179-190 ◽  
Author(s):  
Irfan Mustafa ◽  
Tariq Javed
Keyword(s):  
Heat Transfer ◽  
Heat Flux ◽  
Natural Convection ◽  
Pure Water ◽  
Wavy Surface ◽  
Convection Flow ◽  
Natural Convection Flow ◽  
Local Skin ◽  
Variable Heat ◽  
Variable Heat Flux

The present analysis is concerned to examine the enhancement of heat transfer in natural convection flow of nanofluid through a vertical wavy plate assumed at variable heat flux. The rate of heat transfer in nanofluid flow as compared to pure water can be increased due to increase the density of nanofluid which depends on the density and concentration of nanoparticles. For this analysis, Tiwari and Das model is used by considering two nanoparticles i. e. Al2O3 and Cu are suspended in a base fluid (water). A very efficient implicit finite difference technique converges quadratically is applied on the concerning PDE for numerical solution. The effects of pertinent parameters namely, volume fraction parameter of nanoparticle, wavy surface amplitude, Prandtl number and exponent of variable heat flux on streamlines, isothermal lines, local skin friction coefficient and local Nusselt number are shown through graphs. In this analysis, a maximum heat transfer rate is noted in Cu-water nanofluid through a vertical wavy surface as compared to Al2O3-water and pure water.

Natural Convection Along a Vertical Wavy Surface With Uniform Heat Flux

1989 ◽  
Vol 111 (4) ◽  
pp. 1106-1108 ◽  
Author(s):  
S. Ghosh Moulic ◽  
L. S. Yao
Keyword(s):  
Heat Flux ◽  
Natural Convection ◽  
Wavy Surface ◽  
Uniform Heat Flux ◽  
Uniform Heat

scholarly journals A Comparative Study of Natural Convection Flow of Fractional Maxwell Fluid with Uniform Heat Flux and Radiation

Complexity ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-16
Author(s):  
Ruihua Tang ◽  
Sadique Rehman ◽  
Aamir Farooq ◽  
Muhammad Kamran ◽  
Muhammad Imran Qureshi ◽  
...  
Keyword(s):  
Heat Flux ◽  
Natural Convection ◽  
Comparative Study ◽  
Fractional Derivative ◽  
Maxwell Fluid ◽  
Order Derivative ◽  
Convection Flow ◽  
Uniform Heat Flux ◽  
Natural Convection Flow ◽  
Integer Order

This paper focuses on the comparative study of natural convection flow of fractional Maxwell fluid having uniform heat flux and radiation. The well-known Maxwell fluid equation with an integer-order derivative has been extended to a non-integer-order derivative, i.e., fractional derivative. The explicit expression for the temperature and velocity is acquired by utilizing the Laplace transform (LT) technique. The two fractional derivative concepts are used (Caputo and Caputo–Fabrizio derivatives) in the formulation of the problem. Utilizing the Mathcad programming, the effect of certain embedded factors and fractional parameters on temperature and velocity profile is graphically presented.

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