HCC:Small:FlowBase: A Realtime Simulation System of Turbulent Fluids Driven by Flow Pattern Database

本项目采用一种新颖的流型数据库，开发了一种创新的湍流流体实时仿真系统FlowBase。预先生成的小流模式集合由数据库系统管理，具有高效的存储和搜索策略、查询和事务处理，实现快速有效的检索。根据正在进行的全球流的物理和拓扑参数，将模式与实时正在进行的模拟相结合。FlowBase系统在单个PC或集群上实现GPU（图形硬件）加速。此外，系统提供焦点+上下文流模式集成，仅在焦点区域附加湍流细节，并根据计算资源预算添加模式，提供灵活性。通过这种方式，系统克服了大规模模拟的资源限制，并为模拟视觉上满意和物理上正确的流体现象提供了湍流的细节。FlowBase系统可以快速提供生动活泼的流体行为，创造逼真的体验，这是许多教育和娱乐应用的决定性因素，包括基于虚拟现实的教育、广告和娱乐行业。它还有利于预测和训练应用，其中湍流流体的快速计算和视觉交互非常关键，例如污染物扩散预测，应急响应人员培训，飞行模拟器以及城市和环境设计。模式数据库、新算法、建模技术、计算和可视化工具的研究成果通过出版物和软件包向公众开放。

This project develops an innovative real-time simulation system of turbulent fluids, FlowBase, by employing a novel flow pattern database. A collection of pre-generated small flow patterns are managed by a database system with efficient storage and searching strategy, query and transaction handling, to enable fast and effective retrieval. The patterns are integrated with real-time ongoing simulation according to physical and topological parameters of the ongoing global flow. The FlowBase system is implemented with GPU (graphics hardware) acceleration on single PC or clusters. Furthermore, the system provides focus+context flow pattern integration that only appends turbulent flow details in focus areas, and also offers flexibility by adding patterns according to the computational resource budget. In this way, the system overcomes the resource limit for large-scale simulations and provides turbulent flow details for modeling visually-satisfying and physically-correct fluid phenomena.The FlowBase system can rapidly provide vivid and spirited fluid behavior to create realistic experiences which are a decisive factor in many educational and entertainment applications, including virtual reality based education, advertisement and entertainment industry. It also benefits prediction and training applications, where fast computation and visual interaction of turbulent fluids are highly critical, such as contaminant dispersion prediction, emergency responder training, flight simulators, and urban and environmental design. The research outcome of the pattern database, novel algorithm, modeling techniques, computational and visualization tools are made publicly available through publications and software packages.