Investigation of transport-reaction dynamics and local/global entropy production in topology optimization of two-species reaction-diffusion systems

Alizadeh, Mehrzad; Charoen-amornkitt, Patcharawat; Suzuki, Tsuneo; Tsushima, Shohji

doi:10.1016/j.ces.2023.118739

Cited by 7 publications

(2 citation statements)

References 57 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…86,87 Since the total reaction rate is given by the system current density, most entropy production by the reaction is the inevitable entropy generation that cannot be prevented in a finite time/size context. 18,77 Based on the data of Fig. 6e, the electron transport has the smallest contribution to the total entropy compared to other transport phenomena.…”

Section: Resultsmentioning

confidence: 99%

“…[74][75][76] Although such a substantial increase in degrees of freedom makes the algorithm more sophisticated, it possibly allows obtaining a much better result. Advantages of TO over conventional optimization methods are comprehensively studied in the literature and interested readers may refer to a previous publication of our group 77 or the works of other research groups. 22,78,79 According to TO formalism, the optimization is defined as a material allocation problem in a prescribed design domain.…”

Section: Optimization Algorithmmentioning

confidence: 99%

See 1 more Smart Citation

A Numerical Simulation of Evolution Processes and Entropy Generation for Optimal Architecture of an Electrochemical Reaction-Diffusion System: Comparison of Two Optimization Strategies

Alizadeh,

Charoen-amornkitt,

Suzuki

et al. 2023

J. Electrochem. Soc.

Self Cite

View full text Add to dashboard Cite

Employment of electrochemical energy devices is being expanded as the world is shifting toward more sustainable power resources. To meet the required cost efficiency standards for commercialization, there is a need for optimal design of the electrodes. In this study, a topology optimization method is proposed to increase the performance of an electrochemical reaction-diffusion system. A dimensionless model is developed to characterize the transport and rate processes in the system. Two optimization strategies are introduced to improve system performance using a heterogeneous distribution of constituents. In addition, an entropy generation model is proposed to evaluate the system irreversibilities quantitatively. The findings show that the system performance could be enhanced up to 116.7% with an optimal tree-root-like structure. Such a heterogeneous material distribution provides a balance among various competing transport and rate processes. The proposed methodology could be employed in optimal design of electrodes for various electrochemical devices. This study also offers a fundamental comprehension of optimal designs by showing the connection between the optimal designs and the entropy generation. It is revealed that a less dissipating system corresponds to a more uniform current and entropy generation. Some recommendations are also made in choosing a proper optimization approach for electrochemical systems.

show abstract