应重点实验室邀请， Lund University, Sweden的袁金良教授将于7月10日访问重点实验室并做学术报告，现将相关事宜通知如下：
题 目： 燃料电池多尺度传输现象的模拟研究
Modeling of Multi-scale Transport Phenomena in Fuel Cells
Various reacting transport phenomena appear at different scales in fuel cells, including flow of multi-component/-phase reactants and products in cells and manifolds, transfer of charges (ions and electrons), heat and mass transfer in various functional components and sites. These physical processes are strongly affected by chemical/electrochemical reactions in nano-/micro-structured electrodes and electrolytes. For example, the electrochemical reactions generate or consume chemical species together with electric current production, which takes place at the active sites (so-called three-phase boundaries, or TPBs) in all kinds of fuel cells. Potential water phase change in proton exchange membrane fuel cells (PEMFCs) and internal reforming reactions of hydrocarbon fuels in solid oxide fuel cells (SOFCs) are strongly coupled with the electrochemical reactions and other transport processes. To understand and analyse these phenomena at the unit-cell and component level, typically computational fluid dynamics (CFD)-based approaches are employed, while microscopic modeling methods, like molecular dynamics (MD) and Monte Carlo (MC), are required to analyse the various processes in catalyst layers and active surfaces, while methods like lumped parameter analysis and overall heat/mass balances are more suitable for stack and system studies.
In this talk, different kinds of the analysis approaches will be highlighted and discussed for multi-physics reacting transport processes at various scales in fuel cells, together with typical results predicted by various models.
Professor Jinliang Yuan from Lund University, Sweden, has developed several models for comprehensive understanding of catalytically chemical reaction mechanisms and multi-functional material structure effects on transport processes in components of fuel cell systems, in terms of micro-/nano-structures and configurations, water/thermal/mass balance and integration, and overall fuel cell/stack performance as well. Dr. Yuan works as a senior researcher and the leader in the projects and also as a supervisor of PhD students (currently five). Dr Yuan has established a good network with industry and universities, and is now strongly involved in international collaboration both concerning projects and as reviewer of research funding agencies and papers for journals/conferences. He severs also for international journals in the editorial board, and has delivered several invited lectures and keynote presentations internationally. As a teacher/adviser, he has been involved in several courses for undergraduates and PhD students both in China and Sweden. More than 200 papers of various kinds have been extensively published in international journals or conference proceedings.