Entropy generation in ice slurry pipe flow

Bouzid, N.; Saouli, Salah; Aïboud-Saouli, Soraya

doi:10.1016/j.ijrefrig.2008.03.002

Cited by 11 publications

(8 citation statements)

References 10 publications

(4 reference statements)

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“…A numerical study was reported in [10] to investigate both the first and the second law of thermodynamics for thermally developing forced convection in a circular tube filled by a saturated porous medium, with uniform wall temperature and effects of viscous dissipation. In [11], a review was presented on entropy generation for the fully developed ice slurry pipe flow and it was found that as the dimensionless group parameter or mass fraction of ice increases, the volumetric average entropy generation number increases. The effect of viscosity parameters on entropy generation for Hagen-Poiseuille flow in a pipe was investigated in [12] due to fluid friction and heat transfer.…”

Section: Introductionmentioning

confidence: 99%

Entropy generation of micropolar fluid flow in an inclined porous pipe with convective boundary conditions

Srinivasacharya

Bindu

2017

Sādhanā

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The objective of this paper is to examine the nature of irreversibilities in the form of entropy generation for a micropolar fluid flow through an inclined porous pipe with convective boundary conditions. The governing equations are non-dimensionlized and then linearized using a quasilinearization method. The resulting linearized equations are solved by Chebyshev spectral collocation method. The velocity, microrotation and temperature profiles are presented graphically for various values of governing parameters. Further, these profiles are used to evaluate the entropy generation and Bejan number.

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Section: Introductionmentioning

confidence: 99%

Entropy generation of micropolar fluid flow in an inclined porous pipe with convective boundary conditions

Srinivasacharya

Bindu

2017

Sādhanā

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“…Some studies [30,31] have simplified this expression. However this simplification masks some important physical aspects.…”

Section: Entropy Generationmentioning

confidence: 99%

Parametric Analysis of Entropy Generation in Off-centered Stagnation Flow Towards a Rotating Disc

Rashidi

Shamekhi

Kumar

2014

Nonlinear Engineering

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The similarity solution for the steady stagnation flow towards an off-centered rotating disc is gives a system of non-linear partial differential equations. These nonlinear differential equations are numerically solved by applying well known Keller-Box Method. After finding the velocity distributions, the important designing subject, entropy generation of this system has been analyzed. Graphical results are presented to investigate effects of the rotation ratio α, off-centering, Reynolds number and axial height on the radial and azimuthal velocities and entropy generation. In order to show the effectiveness of the KellerBox method, the obtained results are compared with available solutions obtained using DTM. The obtained results demonstrate the reliability of the algorithm and the KellerBox method is an attractive method in solving the systems of nonlinear partial differential equations, and also the entropy generation is an important parameter depends on design and work conditions that should be in the attention of designers of these rotating systems.

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“…In [ 30 ], the authors propose a method for the analysis of the entropy generation rate in the design of single-phase thermal processes, heat storage systems or various thermal cycles. The method proposed by Bejan [ 30 ] has been successfully used by other authors to perform a thermodynamic assessment of thermal processes during single-phase flows [ 31 , 32 ], multi-phase flows [ 33 , 34 , 35 , 36 , 37 , 38 ], heat exchange involving non-Newtonian fluids [ 32 , 39 , 40 ] and design of thermal systems and exchangers [ 40 , 41 , 42 , 43 , 44 , 45 , 46 , 47 , 48 ].…”

Section: Introductionmentioning

confidence: 99%

“…The issues concerning entropy generation in thermal and flow processes with ice slurry were discussed in the studies [ 38 , 39 , 40 , 46 ].…”

Section: Introductionmentioning

confidence: 99%

Entropy Generation of Forced Convection during Melting of Ice Slurry

Niezgoda-Żelasko¹

2019

Entropy

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This paper looks at entropy generation during ice slurry flow in straight pipes and typical heat exchanger structures used in refrigeration and air-conditioning technology. A dimensionless relationship was proposed to determine the interdependency between flow velocity and the volume fraction of ice, for which the entropy generation rates were at the minimum level in the case of non-adiabatic ice slurry flow. For pipe flow, the correlation between the minimum entropy generation rate and the overall enhancement efficiency was analyzed. As regards heat exchange processes in heat exchangers, the authors analyzed the relationship between the minimum entropy generation rate and the heat exchange surface area and exchanger efficiency.

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Entropy generation in ice slurry pipe flow

Cited by 11 publications

References 10 publications

Entropy generation of micropolar fluid flow in an inclined porous pipe with convective boundary conditions

Entropy generation of micropolar fluid flow in an inclined porous pipe with convective boundary conditions

Parametric Analysis of Entropy Generation in Off-centered Stagnation Flow Towards a Rotating Disc

Entropy Generation of Forced Convection during Melting of Ice Slurry

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