DDDAS-TMRP: Interactive Data-driven Flow-Simulation Parameter Refinement for Understanding the Evolution of Bat Flight

该研究项目旨在创建一个动态数据驱动的应用程序，旨在提高对复杂生物物理系统-蝙蝠飞行的理解。该系统包括基于蝙蝠形态和行为的参数化特征的蝙蝠飞行的多层递阶仿真。该模拟在物理近似和计算速度的多个级别上运行，能够非常快速地求解，但需要测量输入以确保保真度和最佳化。这些输入将以一种集成的方式提供，借鉴并行的一系列实验，其中将生成几个离散的数据流，包括机翼运动学数据、一系列二维切割面上的尾流速度数据，以及其他数据，如骨骼变形、实验确定的材料特性等。这些数据将指导模拟，以确保精确的解决方案，但仍具有高响应性。数据流将使用先进的身临其境的可视化环境进行监测、合成、组合和处理，该环境将用于指导测量和模拟之间的交互，并组织不同的数据流。将开发的模拟环境是第一个这样的系统，能够生成高度不稳定和可变形结构上复杂流动的及时解。这有多种科学和工程上的好处，从解决进化生物学中的基本问题的能力，到利用蝙蝠展翅的能力设计生物模拟结构。实验提供的方向将引导科学家了解这些复杂飞行系统的关键敏感性，并为动物飞行力学的复杂性提供洞察。最后，可视化系统将为综合和管理动态数据提供独特的工具，这些数据来自各种不同的数据来源，每个数据来源都具有不同的质量。

The research project is aimed to create a Dynamic Data Driven Application aimed at improving the understanding of a complex biophysical system - the flight of bats. The system is comprised of a multi-level hierarchical simulation of bat flight based on parameterized features of bat morphology and behavior. The simulation operates at multiple levels of physical approximation and computational speed, and is capable of very rapid solutions but requires input from measurements to ensure fidelity and optimality. This input will be provided in an integrated fashion, drawing from a parallel series of experiments in which several discrete data streams will be generated, including kinematic wing data, wake velocity data over a series of two dimensional cutting planes, as well as other data such as bone deformation,experimentally-determined material properties, etc. This data will direct the simulation ensuring accurate solutions, but still with high responsiveness. The data streams will be monitored, synthesized, combined and processed using an advanced immersive visualization environment which will be used to guide the interactions between the measurement and simulation and to organize the disparate streams of data. The simulation environment to be developed is the first such system capable of generating timely solutions of complex flows over highly unsteady and deformable structures. This has multiple scientific and engineering benefits ranging from the ability to address fundamental questions in evolutionary biology to the design of bio-mimetic structures that draw from the abilities of bats on the wing. The direction provided by the experiment will guide scientists to the key sensitivities of these complex flying systems and provide insight to the complexities of animal flight mechanics. Lastly, the visualization systems will provide a unique tool for the synthesis and management of dynamic data drawn from a wide and disparate variety of data sources each having different qualities.