Finite Element Modeling of Heat Transfer in a Nanofluid Filled Transformer

Guan, Weimin; Jiang, Miao; Fan, Yong; Chen, Jiaqi; Xin, Pan; Yong-he, LI; Dai, Kejie; Zhang, Hailong; Huang, Tao; Ruan, Jiangjun

doi:10.1109/tmag.2013.2279479

Cited by 32 publications

(13 citation statements)

References 10 publications

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“…FEM has been widely used to simulate diverse problems in heat transfer, fluid mechanics. 30,[32][33][34][35] The numerical FEM steps to solve for the thermophoresis problem consists of discretization, element generation, assembly of element equations, and imposition of boundary conditions. The last step is achieved by solving the equation using a combination of Gauss estimation method, LU Decomposition method.…”

Section: Numerical Method Mesh Sensitivity and Convergence Criteriamentioning

confidence: 99%

“…Reviews of natural convective heat transfer of nanofluid focusing on a metallic particle with high‐thermal conductivity now abound . Most notably, Ho et al measured the heat transfer coefficient for an aluminum oxide/water nanofluid system at different nanoparticle concentrations, reporting all physical properties of the nanofluid, such as thermal conductivity, density, and volume expansion.…”

Section: Introductionmentioning

confidence: 99%

“…20 Reviews of natural convective heat transfer of nanofluid focusing on a metallic particle with high-thermal conductivity now abound. [22][23][24][25][26][27] Most notably, Ho et al 28 measured the heat transfer coefficient for an aluminum oxide/water nanofluid system at different nanoparticle concentrations, reporting all physical properties of the nanofluid, such as thermal conductivity, density, and volume expansion. Based on their results, a model for thermal properties of alumina nanofluid at different volume fractions was suggested: the current study draws on this model.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Computational fluid dynamic evaluation of heat transfer enhancement in microchannel solar collectors sustained by alumina nanofluid

et al. 2019

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Nanofluids have produced a wide range of researches for various cooling/heating purposes, owing to the enhanced thermophysical properties they bring by suspending nanoparticles in the base fluid. This work proposes a detailed computational fluid dynamic (CFD) study of heat transfer enhancement in microchannel solar collectors coupled with nanofluid. The accuracy of the numerical model is ensured through a reliable finite element analysis considering the complexity of the three‐dimensional structure of microchannel solar collector. The thermophoretic motion induced by the suspension of Al2O3 nanoparticles was also evaluated to further understand the thermal enhancement observed in forced convection regimes. The accuracy of the model was first validated with respect to propylene glycol/water fluid, and then applied to evaluate the performance for Al2O3/water nanofluid. A detailed comparison of the performance of the two fluids with an assessment of the temperature and velocity profiles, was adopted to evaluate the thermal efficacy of adding nanofluids. A further investigation of the effect of solar collector inclination angles (0, π/6, π/4,and π/3) at the optimal volumetric concentration of the nanofluid was also done to determine the impact of the system geometry on the efficacy of the heat removal. It was established that the optimal heat removal is achieved at 2% nanoparticle concentration. Finally, it was also detected that increasing the inclination angle of the solar collector (from 0 to π/3) obstructed the heat removal efficiency.

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Section: Numerical Method Mesh Sensitivity and Convergence Criteriamentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Computational fluid dynamic evaluation of heat transfer enhancement in microchannel solar collectors sustained by alumina nanofluid

et al. 2019

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“…Transformer oil is conventionally used as a coolant as well as an insulant. Mineral oil is conventionally used as a coolant as well as an insulant in transformers, which takes away the heat by conduction and convection process [1].…”

Section: Introductionmentioning

confidence: 99%

Investigation on heat transfer characteristics of nano titania added transformer oil with hotspot temperature

et al. 2020

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The heat transfer characteristics of nanofluid produced by mixing nano titania with transformer oil, facilitated by addition of surfactants are analyzed. A 2D model is used to analyze the heat transfer and fluid flow characteristics of nano fluid for understanding the formation of hot spots in the chamber filled with nanofluid. Governing equations for conservation of mass, momentum and energy for capturing the above characteristics are described. The temperature along the vertical mid line from the hot spot are measured experimentally and compared with simulation results. Temperature distribution obtained for nanofluid and transformer oil under both steady and transient state has revealed high rate of heat dissipation in nanofluid. Streamlines have shown the presence of press board affects flow in the bulk of the cavity. Nusselt number estimated across the edges of the hot spot has shown higher convective heat transfer in nanofluid.

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“…AGNETIC NANO-FLUID has been widely studied for biological, medical, and industrial applications [1][2][3]. In these applications, magnetic field and fluid flow field problems usually coexist.…”

Section: Introductionmentioning

confidence: 99%

Numerical Analysis of Electromagnetic Force on Magnetic Nanoparticles in Fluid

et al. 2015

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In this paper, the nanoparticles are ferromagnetic and have charge density on the surface, the magnetic force is coupled with the Lorentz force. To investigate the distribution of magnetic force exerted on a unit cell with different volume fraction, nodal force method and homogenization method are applied. And Lorentz force on the electrical double layers of different size particles are analyzed using both 2D and 3D models. The calculated results show that 2D analysis is sufficient for the analyzed nanoparticles. The proposed electromagnetic forces analysis method can be coupled to fluid and temperature analysis of nano-fluid.Index Terms-Electromagnetic force, nanoparticle, nano-fluid, numerical analysis.

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Finite Element Modeling of Heat Transfer in a Nanofluid Filled Transformer

Cited by 32 publications

References 10 publications

Computational fluid dynamic evaluation of heat transfer enhancement in microchannel solar collectors sustained by alumina nanofluid

Computational fluid dynamic evaluation of heat transfer enhancement in microchannel solar collectors sustained by alumina nanofluid

Investigation on heat transfer characteristics of nano titania added transformer oil with hotspot temperature

Numerical Analysis of Electromagnetic Force on Magnetic Nanoparticles in Fluid

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