Entropy generation in a square enclosure with partial heating from a vertical lateral wall

Erbay, L. Berrin; Altaç, Zekeri̇ya; Sülüs, Birsen

doi:10.1007/s00231-003-0497-x

Cited by 63 publications

(5 citation statements)

References 14 publications

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“…Although thousands of articles were initially encountered, many had to be eliminated due to inaccessibility and overlap. Ultimately, only 92 articles that met the criteria were selected as listed in Table 1, including conference proceedings and journals, which were obtained from a variety of sources, including Scopus (30), WOS (16), Springer Link (8), Science Direct (31), and others (7).…”

Section: Criteria Of the Studymentioning

confidence: 99%

“…Conversely, the local entropy generation maps at high Rayleigh numbers resemble those caused by fluid friction. Erbay et al, [7] examined entropy generation within a square enclosure experiencing transient laminar natural convection with partial heating from a vertical lateral wall. The findings revealed that at low Pr values, Ra number increases result in significant intervals of consistent entropy values, corresponding contours through the centre of the volume.…”

Section: Entropy Generation In Natural Convective Heat Transfermentioning

confidence: 99%

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A Review of Entropy Generation in Rectangular Cavities

Azlina Jumadi,

Norazam Arbin,

Habibis Saleh

et al. 2024

ARFMTS

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Entropy generation is a thermodynamic system attribute representing the direction or result of spontaneous changes within the system. This article uses an entropy generation analysis to examine the thermodynamic optimum in square cavities. Numerous studies have documented using entropy generation analysis as an evaluation measure. This research will utilise entropy generation in various types of convective heat transfer under multiple factors. Furthermore, the problem formulation and outcomes regarding entropy generation in square cavities are presented and summarised in a table. To summarise, the primary goal in dealing with this problem is to get an ideal configuration that maximises energy efficiency through minimising entropy generation and enhancing heat transfer rate. This review study sets the framework for future investigations into entropy production analysis to boost energy efficiency.

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Section: Criteria Of the Studymentioning

confidence: 99%

Section: Entropy Generation In Natural Convective Heat Transfermentioning

confidence: 99%

A Review of Entropy Generation in Rectangular Cavities

Azlina Jumadi,

Norazam Arbin,

Habibis Saleh

et al. 2024

ARFMTS

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“…Only a few studies are reported in the literature concerning heat transfer in enclosures with partially heated side walls, by Frederick and Quiroz [14], Erbay et al [15] and Oztop [16]. Natural convection in an enclosure with partially active walls was studied by Nithyadevi et al [17 -19] and Kandaswamy et al [20] without Soret and Dufour effects.…”

Section: Introductionmentioning

confidence: 96%

Terminal Falling Characteristics of a Sand Grain with Dufour and Soret Effects

Nasrin

Alim

2012

J. Sci. Res.

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The transient effect of double diffusive natural convection of flow in a differentially heated sand grain with Soret and Dufour coefficients is studied numerically. The right vertical wall has constant temperature T c . The lower inlet opening is heated uniformly with fixed temperature T h and the velocity at the inlet of the fluid domain is set to the falling velocity V i . The condition T h > T c is maintained all over the domain. The concentration in right wall is maintained higher than inlet opening (C c < C h ). The governing equations are solved numerically subject to appropriate boundary conditions by a penalty finite-element method. Solutions are obtained for fixed Prandtl number (Pr = 1.73), Rayleigh number (Ra = 10 4 ), Dufour coefficient (D f = 0.5) and Soret coefficient (S r = 0.5). Transient analysis of the streamlines, isotherms, iso-concentration, falling velocity and forces on sand grain, the local and average Nusselt number and Sherwood number, temperature and concentration at subdomain centre as well as average form, subdomain horizontal and vertical velocities are presented graphically. It is found that the rate of heat transfer and mass transfer in the sand grain enhances and reduces respectively for shorter time periods and then they become almost steady.

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“…Sheikhzadeh et al [19] investigate the influence of the Prandtl number on the continuous magneto-convection around an adiabatic body in the center of a square cavity. Multiple scholars [20][21][22][23][24] have investigated the entropy production of spontaneous convection in square or rectangular cavities. Recently, using nanofluid to generate entropy in square or wavy-wall cavities has attracted attention.…”

Section: Introductionmentioning

confidence: 99%

Second Law Analysis for Free Convection in an L-Shaped Cavity Filled with Nanofluid

Nahar,

Salma Parvin,

Md. Hasanuzzaman

2023

AJSE

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The paper aims to analyze the effects of various Prandtl number and different nanoparticles for heat transfer and entropy generation of free convection laminar fluid flow in an L-shaped cavity filled by nanofluid. To investigate the second law characteristics of free convective flow and heat transfer from an L- shaped geometry filled by water and nanofluids (Cu-water, Ag-water, Al2O3-water), the effects of Prandtl number and various nanoparticles on the average Nusselt number, total entropy generation and Bejan number has been numerically analyzed. Isotherms, stream function and entropy generation caused by heat transfer are also presented for various Prandtl numbers and various nanoparticles. The governing equations are solved using penalty finite element method with Galerkins weighted residual technique. The results reveal that Ag-water nanofluid with highest Prandtl number gives the highest amount of irreversibility as well as rate of heat transfer. Cu-water and Ag-water nanofluid produces more irreversibilities than Al2O3-water nanofluid and base fluid. Also the results show that the Nusselt number and Bejan number increase with the increase of Prandtl number. Therefore, Prandtl number may be an important parameter for desired heat transfer increment with decreasing entropy generation in the given geometry.

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Entropy generation in a square enclosure with partial heating from a vertical lateral wall

Cited by 63 publications

References 14 publications

A Review of Entropy Generation in Rectangular Cavities

A Review of Entropy Generation in Rectangular Cavities

Terminal Falling Characteristics of a Sand Grain with Dufour and Soret Effects

Second Law Analysis for Free Convection in an L-Shaped Cavity Filled with Nanofluid

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