Entropy generation analysis during adjoint variable-based topology optimization of porous reaction-diffusion systems under various design dimensionalities

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

“…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.…”

“…TO outperforms other categories of mathematical optimization, such as parametric optimization, thanks to its higher degree of freedom. It has been successfully applied to a wide range of engineering applications, including mechanical, 17 chemical, 18,19 thermal, 20 and fluid 21 systems. In electrochemical devices, TO can be used to design efficient and high-performing electrodes, [22][23][24] flow channels, 25,26 and other components.…”

“…Previously, it has been extensively used for analysis of thermofluid systems. [31][32][33][34][35][36][37][38][39][40][41] In a recent study by Charoen-amornkitt et al 18 the authors used NET to describe entropy generation in a chemical reactor. The entropy production approach based on NET of physical processes at the interfaces has been applied for efficiency improvement in PEM fuel cells with porous electrodes.…”

Topologically Optimized Anode Catalyst Layers of Proton Exchange Membrane Water Electrolyzers

“…Conventional design strategies aimed to achieve a uniform distribution of constituents. However, recent research [3][4][5][6] suggests that performance can be significantly improved by adopting a heterogeneous design approach. By concentrating the distribution of available material where it is most needed, topology optimization leads to a more efficient utilization of resources, ultimately boosting overall cell performance.…”

“…For instance, Roy et al [3] utilized topology optimization to create a porous electrode, which they found to perform better than traditional electrodes. While topology optimization is a numerical approach, our research group has investigated the effects of bulk diffusivity and reaction in the porous reactiondiffusion system [4], and demonstrated how a topologically optimized structure of porous reactors can lead to the most uniform and minimum entropy generation [5,6].…”