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Abstract of the Thesis Analysis of Fluid Flow in Redox Flow Batteries By Erfan Asadipour Master of Science in Energy, Environmental and Chemical Engineering Washington University in St. Louis, 2021 Research Advisor: Professor Vijay Ramani Redox flow batteries (RFB) hold great potential for large-scale stationary energy storage. However, their low energy density compared to other energy storage systems must improve for feasibility. Electrolyte flow distribution affects current density distribution and providing a uniform current density distribution is one way to improve RFB performance. Additionally, reducing the power consumption of the electrolytes’ pump as a source of energy loss in RFB systems increases their efficiency. Investigating both subjects requires analysis of the fluid dynamics in RFB cells. In this thesis, a novel, computationally cost-effective hydraulic-electrical analogous model (HEAM) was developed to study fluid dynamics by implementing scaling analysis on Navier- Stokes and Darcy’s equations. The accuracy of the model was tested by comparing it to experimental data, and it proved to be more accurate than other similar models in the literature. HEAM demonstrated the deficiencies of flow distribution in interdigitated flow fields (IFF) and suggested that lower viscous resistance at the flow distribution manifold or higher resistance in the xiiiPDF Image | Analysis of Fluid Flow in Redox Flow Batteries
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