Flow and Transport in Systems with Shape Change: Mass Transfer in Electrochemical Systems

形状变化系统中的流动和传输：电化学系统中的传质

• 批准号: 8821687
• 负责人: Robert Sani
• 金额: $ 21.54万
• 依托单位: University of Colorado at Boulder
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1989
• 资助国家: 美国
• 起止时间: 1989-08-01 至 1993-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8821687&HistoricalAwards=false
• 关键词: Flow; Transport; Systems; Shape; Change

This project focuses on modelling the moving boundary in electrodeposition and electroetching processes. Models successfully predicting shape change effects in diffusion and migration dominated cases will be extended to include cases where convective transport is important, such as electrochemical deposition of magnetic material onto a rotating fixed-disk leaf. Model development will be correlated with experimental studies. A modified Galerkin finite element technique with a moving grid will be developed to solve the time dependent model with convection. Many engineering applications in coating technology, crystal growth, selective epitaxy, electrochemical platting, machining, and corrosion involve a free and/or moving interfacial region. Often the shape or evolution of the interface is of primary importance in processing, as in electromachining and electroplating. This project singles out electrodeposition and etching systems, which are of great importance in the electronics industry. Insights gleaned from numerical simulation and physical experiments on prototype systems will lead to increased fundamental understanding of these processes as well as insight into scale-up and operation of new generation techniques currently being developed. After minor adaptation the numerical techniques being developed will be applicable to the other moving boundary/interface systems listed above.

该项目的重点是模拟移动边界， 电沉积和电蚀刻工艺。 模型 成功预测扩散中的形状变化效应， 移民为主的案例将扩展到包括 在对流输送很重要的地方，例如 将磁性材料电化学沉积到 旋转固定盘叶。 模型开发将 与实验研究相关。 一个改进的Galerkin 将发展一种具有移动网格的有限元技术 求解含对流的时变模型。 许多工程应用在涂层技术，晶体 生长，选择性外延，电化学电镀， 机械加工和腐蚀涉及一个自由和/或移动 界面区 通常， 接口在处理过程中至关重要，如 电加工和电镀。 这个项目挑选出 电沉积和蚀刻系统，这是伟大的 在电子行业的重要性。 从以下方面收集的见解 数值模拟和样机物理实验 系统将导致增加的基本理解， 这些过程以及对规模扩大和操作的深入了解 目前正在开发的新一代技术。 后 正在开发的数字技术将 适用于其他移动边界/界面系统 上面列出的。