Effect of two immiscible multifluid flow on internal heat generation or absorption in a vertical channel in the presence of concentration

Heat Transfer ◽  
2021 ◽  
Author(s):  
Mangala Kandagal ◽  
Shreedevi Kalyan
Keyword(s):  
Heat Generation ◽  
Internal Heat ◽  
Vertical Channel ◽  
Internal Heat Generation ◽  
Heat Generation Or Absorption

Effects of Heat Generation or Absorption on Free Convection Flow of a Nanofluid Past an Isothermal Inclined Plate

2014 ◽  
Vol 970 ◽  
pp. 267-271 ◽  
Author(s):  
S. Akilu ◽  
M. Narahari
Keyword(s):  
Free Convection ◽  
Heat Generation ◽  
Internal Heat ◽  
Internal Heat Generation ◽  
Convection Flow ◽  
Inclined Plate ◽  
Free Convection Flow ◽  
Absorption Parameter ◽  
Keller Box Method ◽  
Heat Generation Or Absorption

In this paper, the effects of internal heat generation or absorption on free convection flow of a nanofluid past an isothermal inclined plate have been investigated numerically. The governing boundary-layer equations are first transformed into a system of coupled nonlinear ordinary differential equations using similarity variables. An efficient implicit finite-difference scheme known as the Keller-box method is employed to solve the resulting nonlinear equations. The effects of internal heat generation or absorption parameter on the flow fields have been presented graphically and discussed. It is found that the rate of heat transfer decreases with increasing heat generation, Brownian motion and thermophoresis parameters whereas it increases with increasing heat absorption parameter and Prandtl number.

Natural convection in a wavy porous cavity with sinusoidal heating and internal heat generation

2017 ◽  
Vol 27 (2) ◽  
pp. 287-309 ◽  
Author(s):  
Huey Tyng Cheong ◽  
S. Sivasankaran ◽  
M. Bhuvaneswari
Keyword(s):  
Heat Transfer ◽  
Heat Generation ◽  
Internal Heat ◽  
Internal Heat Generation ◽  
Electronic Cooling ◽  
Cooling Systems ◽  
Content Type ◽  
Porous Cavity ◽  
Heat Generation Or Absorption ◽  
The Right

Purpose The purpose of this paper is to study natural convective flow and heat transfer in a sinusoidally heated wavy porous cavity in the presence of internal heat generation or absorption. Design/methodology/approach Sinusoidal heating is applied on the vertical left wall of the cavity, whereas the wavy right wall is cooled at a constant temperature. The top and bottom walls are taken to be adiabatic. The Darcy model is adopted for fluid flow through the porous medium in the cavity. The governing equations and boundary conditions are solved using the finite difference method over a range of amplitudes and number of undulations of the wavy wall, Darcy–Rayleigh numbers and internal heat generation/absorption parameters. Findings The results are presented in the form of streamlines, isotherms and Nusselt numbers for different values of right wall waviness, Darcy–Rayleigh number and internal heat generation parameter. The flow field and temperature distribution in the cavity are affected by the waviness of the right wall. The wavy nature of the cavity also enhances the heat transfer into the system. The heat transfer rate in the cavity decreases with an increase in the internal heat generation/absorption parameter. Research limitations/implications The present investigation is conducted for steady, two-dimensional natural convective flow in a wavy cavity filled with Darcy porous medium. The waviness of the right wall is described by the amplitude and number of undulations with a well-defined mathematical function. An extension of the present study with the effects of cavity inclination and aspect ratio will be the interest for future work. Practical implications The study might be useful for the design of solar collectors, room ventilation systems and electronic cooling systems. Originality/value This work examines the effects of sinusoidal heating on convective heat transfer in a wavy porous cavity in the presence of internal heat generation or absorption. The study might be useful for the design of solar collectors, room ventilation systems and electronic cooling systems.

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