Entropy generation analysis of liquid fluid past embedded open parallel microchannels within the surface

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Abstract

This paper presents an analysis of entropy generation of forced convection heat transfer of liquid fluid over the horizontal surface with embedded open parallel microchannels at constant heat flux boundary conditions. The governing partial differential equations subjected to slip flow boundary conditions are transformed into a set of ordinary differential equations using similarity variables. These ordinary differential equations are solved numerically by using a fourth order Runge-Kutta and shooting method. Entropy production related to open parallel embedded microchannels is considered. The rate of entropy generation is formulated by an integral of local entropy generation subjected to constant heat flux boundary condition. The rate of entropy generation is investigated and discussed in details for various values of slip coefficient. It is shown that the embedded open parallel microchannels within the surface can sufficiently reduce both friction and thermal irreversibilities of liquid fluid through slip-flow conditions.

Original languageEnglish
Pages (from-to)462-470
Number of pages9
JournalEuropean Journal of Scientific Research
Volume28
Issue number3
Publication statusPublished - 2009

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Microchannel
Entropy
entropy
Microchannels
Liquid
Slip Flow
Fluid
Hot Temperature
liquid
liquids
Fluids
fluid
Liquids
Heat Flux
Boundary conditions
boundary condition
Ordinary differential equation
heat
Ordinary differential equations
heat flux

Keywords

  • Constant heat flux
  • Embedded open parallel microchannels
  • Entropy generation
  • Exergy losses
  • Liquid fluid

ASJC Scopus subject areas

  • General

Cite this

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title = "Entropy generation analysis of liquid fluid past embedded open parallel microchannels within the surface",
abstract = "This paper presents an analysis of entropy generation of forced convection heat transfer of liquid fluid over the horizontal surface with embedded open parallel microchannels at constant heat flux boundary conditions. The governing partial differential equations subjected to slip flow boundary conditions are transformed into a set of ordinary differential equations using similarity variables. These ordinary differential equations are solved numerically by using a fourth order Runge-Kutta and shooting method. Entropy production related to open parallel embedded microchannels is considered. The rate of entropy generation is formulated by an integral of local entropy generation subjected to constant heat flux boundary condition. The rate of entropy generation is investigated and discussed in details for various values of slip coefficient. It is shown that the embedded open parallel microchannels within the surface can sufficiently reduce both friction and thermal irreversibilities of liquid fluid through slip-flow conditions.",
keywords = "Constant heat flux, Embedded open parallel microchannels, Entropy generation, Exergy losses, Liquid fluid",
author = "Yazdi, {M. H.} and Shahrir Abdullah and Ishak Hashim and Kamaruzzaman Sopian and Azami Zaharim",
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journal = "European Journal of Scientific Research",
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T1 - Entropy generation analysis of liquid fluid past embedded open parallel microchannels within the surface

AU - Yazdi, M. H.

AU - Abdullah, Shahrir

AU - Hashim, Ishak

AU - Sopian, Kamaruzzaman

AU - Zaharim, Azami

PY - 2009

Y1 - 2009

N2 - This paper presents an analysis of entropy generation of forced convection heat transfer of liquid fluid over the horizontal surface with embedded open parallel microchannels at constant heat flux boundary conditions. The governing partial differential equations subjected to slip flow boundary conditions are transformed into a set of ordinary differential equations using similarity variables. These ordinary differential equations are solved numerically by using a fourth order Runge-Kutta and shooting method. Entropy production related to open parallel embedded microchannels is considered. The rate of entropy generation is formulated by an integral of local entropy generation subjected to constant heat flux boundary condition. The rate of entropy generation is investigated and discussed in details for various values of slip coefficient. It is shown that the embedded open parallel microchannels within the surface can sufficiently reduce both friction and thermal irreversibilities of liquid fluid through slip-flow conditions.

AB - This paper presents an analysis of entropy generation of forced convection heat transfer of liquid fluid over the horizontal surface with embedded open parallel microchannels at constant heat flux boundary conditions. The governing partial differential equations subjected to slip flow boundary conditions are transformed into a set of ordinary differential equations using similarity variables. These ordinary differential equations are solved numerically by using a fourth order Runge-Kutta and shooting method. Entropy production related to open parallel embedded microchannels is considered. The rate of entropy generation is formulated by an integral of local entropy generation subjected to constant heat flux boundary condition. The rate of entropy generation is investigated and discussed in details for various values of slip coefficient. It is shown that the embedded open parallel microchannels within the surface can sufficiently reduce both friction and thermal irreversibilities of liquid fluid through slip-flow conditions.

KW - Constant heat flux

KW - Embedded open parallel microchannels

KW - Entropy generation

KW - Exergy losses

KW - Liquid fluid

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