LincoSim：基于Web的HPC云平台，用于自动虚拟拖曳水池分析
LincoSim: a web based HPC-cloud platform for automatic virtual towing tank analysis
摘要：
在这项工作中，我们提出了一个新的基于Web的HPC云平台自动虚拟拖曳水池分析。众所周知，新船体的设计项目需要使用分析工具、3D计算方法、实验设备和耐波性试验来持续集成形状假设和流体动力学验证。从分析工具到耐波性试验，这种设计工具的复杂性和成本显著增加。为了在成本和高质量数据获取之间进行有意义的权衡，在过去十年中，3D计算模型的使用也受到众所周知的技术因素的推动而增长。然而，在过去，从硬件和软件成本到所需的特定技术技能，在用于执行虚拟拖曳水池数据获取的3D计算模型的广泛传播上存在几个限制因素。在这项工作中，我们提出了一种创新的高层次的方法，这是体现在所谓的LincoSim网络应用程序中，一个假设的设计师用户可以进行模拟，只有从自己的几何形状和一组有意义的物理参数。LincoSim自动管理并向用户隐藏CFD建模和HPC基础设施使用的所有必要细节，允许他们访问、可视化和分析来自Web浏览器的同一个访问点的输出。除了Web界面外，该平台还包括一个后端服务器，该服务器实现了云逻辑，并可以连接到多个HPC机器进行计算。LincoSim目前使用有限体积Open-FOAM CFD引擎。已经进行了初步的验证活动，以评估该工具的鲁棒性和可靠性，并提出了一种新的方法，用于开发计算机辅助工程（CAE）应用。
英文摘要：
In this work, we present a new web based HPC-cloud platform for automatic virtual towing tank analysis. It is well known that the design project of a new hull requires a continuous integration of shape hypothesis and hydrodynamics verifications using analytical tools, 3D computational methods, experimental facilities and sea keeping trial tests. The complexity and the cost of such design tools increase considerably moving from analytical tools to sea keeping trials. In order to perform a meaningful trade-off between costs and high quality data acquiring during the last decade the usage of 3D computational models has grown pushed also by well-known technological factors. Nevertheless, in the past, there were several limiting factors on the wide diffusion of 3D computational models to perform virtual towing tank data acquiring, from hardware and software costs to the specific technological skills needed. In this work we propose an innovative high-level approach which is embodied in the so-called LincoSim web application in which a hypothetical designer user can carry out the simulation only starting from its own geometry and a set of meaningful physical parameters. LincoSim automatically manages and hides to the user all the necessary details of CFD modelling and of HPC infrastructure usage allowing them to access, visualize and analyze the outputs from the same single access point made up from the web browser. In addition to the web interface, the platform includes a back-end server which implements a Cloud logic and can be connected to multiple HPC machines for computing. LincoSim is currently set up with finite volume Open-FOAM CFD engine. A preliminary validation campaign has been performed to assess the robustness and the reliability of the tool and is proposed as a novel approach for the development of Computer Aided Engineering (CAE) applications.
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