Pore-scale numerical study of flow characteristics in anisotropic metal foam with actual skeleton structure

Yu, Peixun; Wang, Yu; Ji, Ritian; Wang, Hui; Bai, Junqiang

doi:10.1016/j.icheatmasstransfer.2021.105401

Cited by 19 publications

(3 citation statements)

References 28 publications

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Section: Foamed Metal Cathode Characteristicsmentioning

confidence: 99%

“…Foamed brass material is one of the multifunctional materials with some excellent performance, such as high porosity and pore density, high thermal conductivity, high-pressure drop, dense and tortuous narrow ow channels, enough mechanical strength, and so on [11][12]. When the fresh electrolyte ows through the metal holes in the foamed brass cathode, the electrolyte pressure can constantly decrease due to the obstruction of the liquid by the metal skeleton and the friction between the electrolyte and skeleton [12]. Meanwhile, with the advantage of numerous tortuous liquid ow passages and excellent thermal conductivity, the fresh electrolyte can also easily transmit to the ECM region to maintain electrochemical reactions and take away the generated electrochemical productions.…”

Section: Foamed Metal Cathode Characteristicsmentioning

confidence: 99%

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Analysis of electrochemical machining of involute internal spline by foamed metal cathode

Huang

Cong

Wang

et al. 2023

Int J Adv Manuf Technol

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The foamed metal material is novelty applied to manufacture the tool cathode to realize the electrochemical machining(ECM)of involute internal spline of di cult-to-cut materials. The porosity and electrolyte ow characteristics of the foamed brass cathode are analyzed. The geometric and mathematical model of involute internal spline by ECM is built, and the relevant electric eld simulations with different machining voltages, electrolyte types and cathode feed rates which directly determined the ECM results are conducted by COMSOL Multiphysics software. From the simulation results, the suitable process parameters are obtained and then carried out process experiments. The experiment results show that the foamed metal material can be used to fabricate the tool cathode for ECM. And when the machining voltage is 10 V, the electrolyte is 2% NaCl + 8% NaNO 3 solution, the cathode feed rate is 1.00 mm/min, the involute internal spline formed by axial ECM can get a better pro le which basically meets the nishing requirements. The application of the foamed metal cathode laid a new technical foundation

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Section: Foamed Metal Cathode Characteristicsmentioning

confidence: 99%

Section: Foamed Metal Cathode Characteristicsmentioning

confidence: 99%

Analysis of electrochemical machining of involute internal spline by foamed metal cathode

Huang

Cong

Wang

et al. 2023

Int J Adv Manuf Technol

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“…Moreover, promoting axial thermal conductivity enhances heat transfer. Yu et al [24] explored the anisotropic properties of porous media with two different pore structures and found anisotropic characteristics important. Ren et al [25] reported the anisotropic thermal conductivity effects in a woven metal foam PCM composite.…”

Section: Introductionmentioning

confidence: 99%

Computational Modeling of Latent Heat Thermal Energy Storage in a Shell-Tube Unit: Using Neural Networks and Anisotropic Metal Foam

et al. 2022

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Latent heat storage in a shell-tube is a promising method to store excessive solar heat for later use. The shell-tube unit is filled with a phase change material PCM combined with a high porosity anisotropic copper metal foam (FM) of high thermal conductivity. The PCM-MF composite was modeled as an anisotropic porous medium. Then, a two-heat equation mathematical model, a local thermal non-equilibrium approach LTNE, was adopted to consider the effects of the difference between the thermal conductivities of the PCM and the copper foam. The Darcy–Brinkman–Forchheimer formulation was employed to model the natural convection circulations in the molten PCM region. The thermal conductivity and the permeability of the porous medium were a function of an anisotropic angle. The finite element method was employed to integrate the governing equations. A neural network model was successfully applied to learn the transient physical behavior of the storage unit. The neural network was trained using 4998 sample data. Then, the trained neural network was utilized to map the relationship between control parameters and melting behavior to optimize the storage design. The impact of the anisotropic angle and the inlet pressure of heat transfer fluid (HTF) was addressed on the thermal energy storage of the storage unit. Moreover, an artificial neural network was successfully utilized to learn the transient behavior of the thermal storage unit for various combinations of control parameters and map the storage behavior. The results showed that the anisotropy angle significantly affects the energy storage time. The melting volume fraction MVF was maximum for a zero anisotropic angle where the local thermal conductivity was maximum perpendicular to the heated tube. An optimum storage rate could be obtained for an anisotropic angle smaller than 45°. Compared to a uniform MF, utilizing an optimum anisotropic angle could reduce the melting time by about 7% without impacting the unit’s thermal energy storage capacity or adding weight.

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Thermal transport in engineered cellular materials: A contemporary perspective

Singh,

Mahajan

2024

Advances in Heat Transfer

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Pore-scale numerical study of flow characteristics in anisotropic metal foam with actual skeleton structure

Cited by 19 publications

References 28 publications

Analysis of electrochemical machining of involute internal spline by foamed metal cathode

Analysis of electrochemical machining of involute internal spline by foamed metal cathode

Computational Modeling of Latent Heat Thermal Energy Storage in a Shell-Tube Unit: Using Neural Networks and Anisotropic Metal Foam

Thermal transport in engineered cellular materials: A contemporary perspective

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