A dynamic domain decomposition method for solving coupled multiphysics problems based on a distributed software agent environment

基于分布式软件代理环境求解耦合多物理场问题的动态域分解方法

• 批准号: 243604517
• 负责人: Professor Dr. Wolfgang M. Rucker
• 金额: --
• 依托单位: Institut für Automatisierungstechnik und Softwaresysteme (IAS)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2013
• 资助国家: 德国
• 起止时间: 2012-12-31 至 2017-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/243604517?language=en
• 关键词: dynamic; domain; decomposition; method; solving

The optimization of the efficient and flexible calculation process of complex three-dimensional coupled field problems, calculated by software agents, during run time is the goal of this project. Previous work shows, that the use of multiple software agents within a multi agent system using specialized algorithms of numerical field calculation such as the finite element method or boundary element method provide the efficient and flexible calculation. Therefore, the simulation is statically split on classes of problems like the included physics, its domains or available resources. The order of the separation is based on the strength of the expected coupling between the partial problems. This represents the usual approach to computations on distributed resources. The calculation of the partial problems as well as considering related couplings are done decentralized within the software agent system considering available computing resources, the capabilities of the calculation agent and their workload. A validation of the splitting - and thus also the coupling hierarchy is possible during runtime based on information, such as the convergence behaviour or the current state of partial calculations. Due to non-linear coupling between the partial problems, and due to the nondeterministic behaviour of every distributed cluster, a dynamic coupling hierarchy is numerically beneficial for the convergence of an iterative distributed calculation approach. Based on the existing agent system a dynamic consideration of the coupling is possible by an active coordination based on intelligent and learned decisions. Accordingly, the implementation of a learning system using a knowledge base for storable parameters of a coupled systems. This also includes the distributed, decentralized architecture where knowledge is not generated centrally, but on different units available only temporarily. Taken recommendations from the knowledge base into account is done within the numerical iterative solution procedure by adapting the calculation process. The final evaluation of the achieved results completes this project. It is done with special attention to the achieved optimization of coupled systems calculation calculated with decentralized and autonomously acting agents. An additional point is the comparability and gain achieved by the learning system.

该项目的目标是在运行时优化由软件代理计算的复杂三维耦合场问题的高效灵活的计算过程。先前的工作表明，在多智能体系统中使用多个软件智能体，使用数值场计算的专用算法（例如有限元法或边界元法）可提供高效且灵活的计算。因此，模拟会静态地分为几类问题，例如所包含的物理、其领域或可用资源。分离的顺序基于部分问题之间预期耦合的强度。这代表了分布式资源计算的常用方法。考虑到可用的计算资源、计算代理的能力及其工作负载，部分问题的计算以及考虑相关耦合是在软件代理系统内分散完成的。在运行时基于诸如收敛行为或部分计算的当前状态之类的信息，可以对分裂以及耦合层次结构进行验证。由于部分问题之间的非线性耦合以及每个分布式集群的不确定性行为，动态耦合层次在数值上有利于迭代分布式计算方法的收敛。基于现有的代理系统，通过基于智能和学习决策的主动协调，可以动态考虑耦合。因此，使用用于耦合系统的可存储参数的知识库来实现学习系统。这还包括分布式、去中心化的架构，其中知识不是集中生成的，而是在临时可用的不同单元上生成的。通过调整计算过程，在数值迭代求解过程中考虑知识库的建议。对所取得成果的最终评估完成了该项目。它特别关注使用分散和自主作用的代理计算的耦合系统计算的优化。另外一点是学习系统所实现的可比性和收益。

项目成果

Softwareagenten zur zuverlässigen Durchführung dezentraler multiphysikalischer Simulationen

用于可靠地执行分散多物理场仿真的软件代理

• DOI: 10.1515/auto-2017-0065
• 发表时间: 2017
• 期刊: at - Automatisierungstechnik
• 作者: D. Vögeli;N. Jazdi;S. Grabmaier;M. Jüttner;M. Weyrich;P. Göhner;W. M. Rucker
• 通讯作者: W. M. Rucker

Numerical framework for the simulation of dielectric heating using finite and boundary element method

使用有限和边界元方法模拟介电加热的数值框架

• DOI: 10.1002/jnm.2273
• 发表时间: 2018
• 期刊: International Journal of Numerical Modelling: Electronic Networks
• 作者: S. Grabmaier;M. Jüttner;D. Vögeli;W. M. Rucker;P. Göhner:
• 通讯作者: P. Göhner: