RFBniCS：用于液流电池的开源仿真框架
RFBniCS: An open-source simulation framework for redox flow batteries
- Norwegian University of Life Sciences（挪威生命科学大学）
- Simula Research Laboratory（西穆拉研究实验室）
机构由 AI 辅助整理，请以论文原文为准。
AI总结：
RFBniCS是FEniCSx中实现的开源有限元框架，用于模拟液流电池半电池，支持多维瞬态模拟，验证中精度和速度优于其他实现，并适用于钒液流电池负半电池研究。
AI中文摘要：
我们介绍了RFBniCS，一个在FEniCSx中实现的开源有限元框架，用于模拟液流电池（RFB）半电池。RFBniCS求解一个成熟的宏观均匀多孔电极模型，该模型考虑了强耦合的电解液流动、多组分物质传输、离子和电子电荷守恒以及界面法拉第电荷转移。与其他开源工具不同，RFBniCS能够在一维、二维和三维几何中进行瞬态RFB半电池模拟，同时显式解析氧化还原活性物质和支持电解质物质的传输。它还描述了电解液通过多孔电极的流动，并且在三维公式中，描述了通过相邻流动通道的流动。为了验证实现，RFBniCS在参数限制状态下的预测与其他已发表的实现进行了比较，通常RFBniCS显示出更高的精度和速度。我们进一步通过模拟钒液流电池负半电池的瞬态响应（使用中等浓度的支持电解质）来展示RFBniCS的能力。在当前实现中，RFBniCS为研究液流电池半电池提供了计算基础，并可扩展到复杂的流场设计、替代化学体系、全电池耦合、详细的膜传输以及额外的多物理场效应。
英文摘要：
We present RFBniCS, an open-source finite-element framework implemented in FEniCSx for simulating redox-flow-battery (RFB) half-cells. RFBniCS solves an established macro-homogeneous porous-electrode model accounting for strongly coupled electrolyte flow, multicomponent species transport, ionic and electronic charge conservation, and interfacial Faradaic charge transfer. Different from other open-access tools, RFBniCS can perform transient RFB half-cell simulations in one-, two-, and three-dimensional geometries while explicitly resolving the transport of both redox-active and supporting-electrolyte species. It also describes electrolyte flow through porous electrodes and, in the three-dimensional formulation, through adjacent flow channels. To verify the implementation, RFBniCS's predictions in parameter-limiting regimes are compared against other published implementations, with RFBniCS generally showing superior accuracy and speed. We further demonstrate RFBniCS's capabilities by a simulation of the transient response of the negative half-cell of a vanadium redox flow battery, with a moderately concentrated supporting electrolyte. In the current implementation, RFBniCS provides the computational basis for studying redox-flow-battery half-cells and can be extended to complex flow-field designs, alternative chemistries, full-cell coupling, detailed membrane transport, and additional multiphysics effects.
