Three-dimensional CFD modeling of direct ethanol fuel cells: evaluation of anodic flow field structures

Maia, Leonardo K.K.; Sousa, Ruy

doi:10.1007/s10800-016-1013-6

Cited by 8 publications

(2 citation statements)

References 25 publications

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“…The simulation and modeling of direct ethanol fuel cells (DEFCs) is well documented in the literature, notably the pioneering work by Sousa Jr. et al [23], who developed a phenomenological model for DEFC simulation. Maia and Sousa Jr. [24] studied DEFCs by adopting a mechanistic approach and the use of CFD, while more recent works by de Oliveira et al [25] and Oliveira et al [26] employed mechanistic and neuro-fuzzy approaches, respectively, for simulation of a DEFC. For simulation of the oxidation of glycerol in DGFCs, the literature lacks studies addressing the full complexity of this reaction.…”

Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Alkaline Direct Glycerol Fuel Cells

Pezzini,

de Castro,

de Oliveira

et al. 2023

Energies

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Mathematical modeling and computer simulation are tools of great importance for the development of fuel cells. Thus, the objective of this work is to carry out the kinetic modeling of glycerol oxidation in a DGFC (direct glycerol fuel cell), considering two different approaches: (1) realistic phenomenological models for the partial oxidation of glycerol in Pt/C, considering its adsorbed intermediates; (2) models of artificial neural networks (ANN—artificial neural networks) for oxidation mainly of PtAg/C and PtAg/MnOx/C. The models were fitted to experimental data already available for validation and determination of their parameters, both using Matlab software, v. R2018a (MathWorks, Natick, MA, USA). Results for the phenomenological models developed showed excellent fits for the polarization curve, with an RMSE (root mean squared error) value on the order of 0.352 to 0.404 mA/cm2, in addition to coverage fractions consistent with the literature for the adsorbed species. The kinetic parameters with the greatest influence on the response of the models were those associated with the consumption of glyceric acid and the formation of tartronic acid and with the dissociative adsorption of water and the formation of Pt-Oads active sites. Regarding the neural models, excellent prediction fits were obtained for all of them, with RMSE values on the order of 0.008 to 0.014 mA/cm2, indicating the possibility of representing the functional interdependence between input variables and the density cell current for cases where it would be too complex to do so via mechanistic modeling (i.e., for PtAg/C and PtAg/MnOx/C oxidation).

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Section: Introductionmentioning

confidence: 99%

Mathematical Modeling of Alkaline Direct Glycerol Fuel Cells

Pezzini,

de Castro,

de Oliveira

et al. 2023

Energies

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“…People's demand for animation is not only image effect but also three-dimensional and realistic image experience. As a design industry, three-dimensional virtual animation has attracted a lot of attention [4]. With the development and progress of 3D virtual animation technology, a variety of excellent animation production software have gradually emerged in recent years, which has significantly improved the production level and production efficiency of 3D virtual animation [5].…”

Section: Introductionmentioning

confidence: 99%

Animation Image Art Design Mode Using 3D Modeling Technology

Tan

2022

Wireless Communications and Mobile Computing

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This paper starts with the external visual performance of animation characters, discusses the design style of three-dimensional animation characters, and integrates with traditional art, and makes a new research and attempt from the combination of art and technology, so that nonprofessionals can easily design three-dimensional animation characters. Aiming at the problem of low recognition level of behavior control data points in traditional 3D virtual animation model method, a method of role modeling and behavior control in 3D virtual animation design is designed. Based on the physical engine, a dynamic model of the character skeleton is established, and the joint motion trajectory is simulated to complete the real-time rendering of the effect. Combined with the case analysis, it is discussed from the aspects of animation character modeling, user experience, and so on. Experimental results show that, compared with traditional methods, the data points collected by the proposed method in the process of character behavior control are more dense, the animation effect is more realistic, and it is highly effective and superior.

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