题 目：Computational Multiphysics at the interface between Solid Mechanics, Fluid Mechanics and Electromagnetism | 固体力学、流体力学和电磁学交界处的多物理计算
时 间：2023年10月21日10:00-11:00
地 点：交通大楼604会议室
报告人：英国爱丁堡Napier大学Chennakesava Kadapa讲师
欢迎广大师生参加！
土木与交通学院
2023年10月17日
报告人简介：
Dr Chennakesava Kadapa is a Lecturer in Mechanical Engineering at Edinburgh Napier University. Dr Kadapa is a recipient of the prestigious Zienkiewicz scholarship for his PhD at Swansea University. Dr Kadapa is an active board member of the UK Association of Computational Mechanics (UKACM), a member of the ASME UK Section leadership team and a Fellow of the Higher Education Academy (FHEA). Dr Kadapa’s research interests include finite element method, higher-order elements, fluid-structure interaction, CutFEM, Isogeometric analysis, Fictitious domain methods, electro-magneto-mechanics, nonlinear mechanics, elastodynamcis, research software development and high-performance computing.
With a pragmatic approach to problem solving, Dr Kadapa has thirteen years of academic experience in modelling and simulation of multiphysics problems in Engineering. Dr Kadapa proposed state-of-the-art finite element formulations for multiphysics simulation software for fluid-structure interaction, incompressible solid mechanics and elastodynamics, electro-active polymers, magneto-active polymers and morphoelasticity. Dr Kadapa published several single-author and first-author papers on advanced finite element methodologies for in the prestigious international journals for Computational Engineering. He developed parallel simulation software on distributed memory architectures and has successfully simulated CFD, FEA and FSI problems of sizes up to 20 million DOFs.
报告摘要：
Simulation software packages have become indispensable tools in science and engineering. Today, mature commercial simulation software tools are available for standard applications in solid mechanics, fluid mechanics, heat transfer and electromagnetism. However, despite recent efforts, these software tools offer limited functionality for the simulation of complex multiphysics problems. These limitations have proven to be a prominent impediment to the optimal design of complex engineering systems, to the optimal control of manufacturing processes and to advance scientific research on complex multiphysics problems. On the other hand, the ever-increasing need for improved-quality and cost-effective products, and the advancements in multifunctional composites for applications in energy harvesting, soft robotics and energy storage, mandate sophisticated simulation tools equipped with multiphysics simulation capabilities.
To address the existing gaps in multiphysics simulation capabilities, my research over the last decade has been focused on developing novel computational methodologies that are efficient and robust for multiphysics problems, and their computer implementations for high-performance computing. Simulation of multiphysics problems in a computationally efficient poses numerous challenges in terms of finite element formulations and their computer implementation. In this invited talk, I present the computational methodologies I have developed for complex fluid-structure interaction problems and large-deformation and large-strain behaviour of smart multifunctional composites such as electro-active and magneto-active polymers, including the effects of viscoelasticity, elastodynamics and growth effects.
仿真软件包已经成为科学和工程中不可或缺的工具。今天，成熟的商业模拟软件工具可用于固体力学、流体力学、传热学和电磁学的标准应用。然而，尽管最近做出了努力，这些软件工具为模拟复杂的多物理问题提供了有限的功能。这些限制已被证明是复杂工程系统的优化设计、制造过程的优化控制和推进复杂多物理问题的科学研究的一个突出障碍。另一方面，对质量和成本效益不断提高的产品的日益增长的需求，以及用于能源收集、软机器人和能源储存应用的多功能复合材料的进步，要求配备具有多物理模拟能力的复杂模拟工具。
为了解决多物理模拟能力方面的现有差距，我在过去十年的研究一直专注于开发用于多物理问题的高效和健壮的新计算方法，以及它们用于高性能计算的计算机实现。在计算效率高的情况下模拟多物理问题在有限元格式及其计算机实现方面提出了许多挑战。在这次受邀演讲中，我介绍了我为智能多功能复合材料(如电活性和磁活性聚合物)的复杂流固相互作用问题和大变形和大应变行为开发的计算方法，包括粘弹性、弹性动力学和生长效应的影响。
