Computation of marine atmospheric boundary layer and nonlinear ocean wavefield for energy for sustainability

计算海洋大气边界层和非线性海洋波场以实现可持续能源

• 批准号: 1133700
• 负责人: Lian Shen
• 金额: $ 28.32万
• 依托单位: Johns Hopkins University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2011
• 资助国家: 美国
• 起止时间: 2011-08-15 至 2013-07-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1133700&HistoricalAwards=false
• 关键词: Computation; marine; atmospheric; boundary; layer

1133700 PI ShenThis project is focused on establishing a computational framework for ocean winds and waves that can be applied to renewable energy applications such as an offshore wind farm and a wave power generator. The simulation tool builds on several recent developments in computational fluid dynamics and hydrodynamics, including a high-order spectral method for waves, large-eddy simulation on a wave surface-fitted grid for wind turbulence, and a hybrid multi-fluid simulation for steep and breaking waves. Using high-performance computing on massively parallel computers, the PI plans to resolve the spatial and temporal details of the wave and wind fields and provide valuable information for wind and wave energy applications.The tasks of the project are to: (i) Develop advanced numerical capability for the wavephase-resolving simulation of ocean wave and wind motions. (ii) Use the wind?wave simulation tool to obtain a better understanding of the ocean wind and wave fields as resources for sustainable energy. (iii) Apply the simulation tool to applications in offshore wind farms, and explore the extension to wave energy harvesting. The PI will improve the simulation and prediction capabilities for offshore winds and waves that are particularly useful for the study of offshore renewable energy. The proposed simulation approach, which considers the full coupling between wind turbulence and nonlinear ocean waves and resolves the details of wave phases, is the first of its kind and possesses an advantage over traditional wave-phase-averaging simulation methods. The application to the simulation of marine atmospheric boundary layer with wind turbine arrays will help answer many scientific and engineering questions related to the development of offshore wind farms. The simulations, with the wave phases resolved, will also be valuable for the understanding of nonlinear wave dynamics and will be helpful for the design of wave energy converters.Broader impacts: The topic of this study, sustainable energy from offshore winds and waves, is of great interest to the scientific community as well as the general public. The simulation tool developed in this project will have direct applications in offshore wind and wave energy harvesting. It can be used for the mapping of renewable energy resources, site selection of wind farms, optimization of wind turbine array arrangements, and operation of wind turbines and wave energy devices in various sea environments. Doctoral graduate education will stress multi-disciplinary training with a focus on modeling multiscale and multi-physics problems. Recruiting of domestic graduate students will leverage an existing NSF IGERT project. The IGERT project focuses on the training in scientific modeling and computation for Ph.D. students in their first two years of study. The project will lead to natural continuation for an IGERT trainee for the remaining three years of Ph.D. study. Ongoing outreach to local Baltimore high schools will be actively continued by providing research experiences for high school students, especially under-represented minorities.

[133700] PI shen这个项目的重点是建立一个海洋风和海浪的计算框架，可以应用于可再生能源的应用，如海上风电场和波浪发电机。该模拟工具建立在计算流体动力学和流体动力学的几个最新发展的基础上，包括波浪的高阶谱方法，风湍流在波浪表面拟合网格上的大涡模拟，以及陡浪和破碎浪的混合多流体模拟。利用大规模并行计算机上的高性能计算，PI计划解决波浪和风场的空间和时间细节，并为风能和波浪能的应用提供有价值的信息。该项目的任务是：(i)发展海浪和风运动的波相分辨模拟的先进数值能力。（ii）利用风？波浪模拟工具，以获得更好的了解海洋风和波场作为可持续能源的资源。（三）将模拟工具应用于海上风电场，探索波浪能收集的扩展。该项目将提高对海上风和海浪的模拟和预测能力，这对研究海上可再生能源特别有用。该模拟方法考虑了风湍流与非线性海浪之间的充分耦合，并解析了波浪相位的细节，是同类方法中的第一个，比传统的波相位平均模拟方法具有优势。应用风力机阵列模拟海洋大气边界层将有助于回答许多与海上风电场开发有关的科学和工程问题。计算出的波相对于理解非线性波动力学和波能转换器的设计具有重要的指导意义。更广泛的影响：这项研究的主题，来自近海风和海浪的可持续能源，引起了科学界和公众的极大兴趣。该项目开发的模拟工具将直接应用于海上风能和波浪能收集。可用于可再生能源资源测绘、风电场选址、风力机阵列布置优化、风力机和波浪能装置在各种海洋环境下的运行。博士研究生教育将强调多学科训练，重点是多尺度和多物理问题的建模。招收国内研究生将利用现有的NSF IGERT项目。IGERT项目的重点是在前两年对博士生进行科学建模和计算方面的培训。该项目将使一名IGERT培训生自然地继续完成剩余三年的博士学习。通过为高中生，特别是少数族裔学生提供研究经验，将积极继续与巴尔的摩当地高中的联系。