Heat transfer in a square cavity filled by nanofluid with sinusoidal wavy walls at different wavelengths and amplitudes

Zarei, Mohammad; Abad, Amir Taghavi Khalil; Hekmatifar, Maboud; Toghraie, Davood

doi:10.1016/j.csite.2022.101970

Cited by 16 publications

(2 citation statements)

References 60 publications

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“…A study [10] examined the effects of a wall with a sinusoidal wave pattern on convection in 2D within a cavity that held nanofluid. The governing equations for the Finite Volume Method (FVM) discretized velocity field and heat transfer are solved with Semi-Infinite Method for Pursuer Linked Equation (SIMPLE).…”

Section: Introductionmentioning

confidence: 99%

Impact of wall roughness elements type and height on heat transfer inside a cavity

Omle,

Askar,

Kovács

2024

Pollack

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This work investigates the effect of two wall roughness types, triangular and circular, on convection and radiation heat transfer in a small space. The ANSYS Fluent is used to do thermal and dynamic modeling; the left wall is warmer than the right one. The upper and lower walls are adiabatic. The Nusselt numbers are compared in all cases and for two Rayleigh values, which change based on the cavity's characteristic length. The results show temperature contours and Nusselt curves. It was observed that the roughness had a strong effect on the air's thermal behavior inside the cavity, where the Nusselt decreased in both roughness cases, especially at small heights. However, the largest decrease is in the triangular case and for angles less than 90°. For 72°, Nusselt is 13.32 and 6% less than smooth and circular cases respectively.

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Section: Introductionmentioning

confidence: 99%

Impact of wall roughness elements type and height on heat transfer inside a cavity

Omle,

Askar,

Kovács

2024

Pollack

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“…The modification of geometry and use of a high thermal conductivity fluid significantly improved thermal performance. Zarei et al(2022) used a finite volume method with the SIMPLE algorithm to study two-dimensional natural convection in a corrugated wall cavity filled with a water-based nanofluid. They analyzed the effect of wall wavelength, amplitude, and volume fraction of nanoparticles on heat transfer for a Rayleigh number of 104.…”

Section: Introductionmentioning

confidence: 99%

Numerical assessment of meshless method for studying nanofluid natural convection in a corrugated wall square cavity

Es-Sabry

Jeyar

Chaabelasri

et al. 2023

Int. J. Renew. Energy Dev.

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This study aims to investigate the impact of various factors, such as wall shape, Rayleigh number, and volume fraction of nanoparticles, on natural convection in a square cavity that is filled with a mixture of Al2O3 solid particles and liquid water. The research employs numerical simulations based on the radial basis function meshless method and the artificial compressibility technique. The results of the study showed that the temperature distribution in the cavity was mostly uniform, except in the vicinity of the hot wall, while the flow was primarily dominated by convection as the Rayleigh number increased. Furthermore, the heat transfer rate increased with the volume fraction of nanoparticles, indicating the significance of nanoparticles in improving the thermal performance of the system. Additionally, the study found that the average Nusselt number, which characterizes the heat transfer efficiency, was highest when the cavity had a wavy wall. For single and double wavy walls, there were respective enhancements of 32% and 6% compared to a regular wall. Additionally, the Nusselt number increased as the volume fraction of nanoparticles, indicating a significant influence of nanoparticle concentration and wall geometry on the fluid flow and heat transfer characteristics in the square cavity. Consequently, this study's outcomes provide crucial insights into designing and optimizing thermal management systems, particularly those utilizing nanofluids.

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Natural Convection of Nanofluids in Partially Filled Metal Foam Sinusoidal Cavities

Tian

Yue

et al. 2023

Transp Porous Med

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Heat transfer in a square cavity filled by nanofluid with sinusoidal wavy walls at different wavelengths and amplitudes

Cited by 16 publications

References 60 publications

Impact of wall roughness elements type and height on heat transfer inside a cavity

Impact of wall roughness elements type and height on heat transfer inside a cavity

Numerical assessment of meshless method for studying nanofluid natural convection in a corrugated wall square cavity

Natural Convection of Nanofluids in Partially Filled Metal Foam Sinusoidal Cavities

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