Collaborative Research: ITR-(ASE+EVS)-(dmc+sim): Coastal Modeling and Management

摘要提案编号： CTS-047014、0426811、0427115主要供应商：P. LYNETT，B。劳本海默，P.刘 德克萨斯A M大学，伍兹霍尔海洋学院，康奈尔大学合作：ITR海岸建模和预测该资助的目标是开发一个耦合的混合动力学计算模型，用于模拟和预测从深海到海岸线的复杂水波过程。 该模型将是物理上全面的，总的域尺度在数百公里的数量级，但与近岸网格分辨率小于一米。 为了包括这一大范围的规模，一些不同的流体动力学模型，各种但重叠的物理和实际的限制，将被整合，以创建一个混合的流体动力学软件工具。 将在分布式计算技术中建立连接不同流体动力学模型的方法，从而允许利用计算机集群资源。此外，混合系统中的每个单独模型都将被并行化，从而创建大规模并行和分布式仿真平台。 与混合水动力模型相结合的是泥沙输运公式，这样就可以模拟近岸的形态变化（即海滩侵蚀）。 这些公式将采用水动力学模型中的精细分辨率和高保真度波浪力，包括破碎带、拍岸波和冲浪带中强湍流的影响。 耦合模型的验证将使用来自实地研究和受控实验的既定数据集。为在各种耦合模型之间传递信息而开发的技术基础设施将是透明的和可扩展的，这样，随着更复杂的模型变得可用，它们可以插入现有的模拟器。 耦合的模拟器将被用于实践工程师的海岸保护措施的设计和决策者谁可能需要更好的估计波浪的影响和侵蚀，由于极端事件。 通过影响未来的设计和政策决定，模拟器将有助于实现可持续的沿海边缘的目标。 教育和推广将通过推出一个基于网络的开放式沿海模拟器来完成。 该网站将完全免费访问，对大学和高中学生以及学者和工程师开放。海岸模拟器将远程用于高级海岸工程设计课程。 这将是巨大的影响，能够显示这些学生第一手的不确定性水平和可能的错误，在常见的工程工具，通过比较与高精度模型在这里开发，这样他们就在一个更好的位置来解释预测，当他们成为执业工程师。 由化学品运输系统部、流体动力学水力学（FDH）计划和海洋科学部（OCE）联合资助。

ABSTRACTPROPOSAL NO.: CTS-047014, 0426811, 0427115PRINCIPAL INVESTIGATORS: P. LYNETT, B. RAUBENHEIMER, P. LIUINSTITUTION: TEXAS A&M UNIVERSITY, WOODS HOLE OCEAN INST., CORNELL UNIVERSITY COLLABORATIVE: ITR COASTAL MODELING AND MANAGEMENTThe goal of this grant to develop a coupled, hybrid hydrodynamic computational model for simulation and prediction of complex water wave processes from the deep ocean to the shoreline. The model will be physically comprehensive, with total domain scales on the order of hundred's of kilometers, yet with a nearshore grid resolution less than a meter. To include this great range of scales, a number of diverse hydrodynamic models, with various but overlapping physical and practical constraints, will be integrated to create a hybrid hydrodynamic software tool. The method of interfacing the different hydrodynamic models will be founded in distributed computing techniques, thereby allowing for utilization of computer cluster resources. In addition, each of the individual models in the hybrid system will be parallelized, leading to the creation of a massively parallel and distributed simulation platform. Coupled with the hybrid hydrodynamic model will be sediment transport formulations, such that morphological change in the nearshore (i.e. beach erosion) can be simulated. These formulations will employ the fine resolution and high fidelity wave forcing from the hydrodynamic model, including the effects of strong turbulence in the breaker, surf, and swash zones. Validation of the coupled model will use established datasets from field studies and controlled experiments. The technology infrastructure developed to pass information between the various coupled models will be transparent and expandable, such that as more sophisticated models become available, they may be plugged into the existing simulator. The coupled simulator will be utilized by practicing engineers for design of coastal protection measures and by policy makers who may need better estimations of wave impact and erosion due to extreme events. By influencing future design and policy decisions, the simulator will contribute towards the goal of sustainable coastal margins. Education and outreach will be accomplished through the unveiling of a web-based, open access, coastal simulator. The website will be completely free access, open to college and high school students, as well as academics and engineers. The coastal simulator will be used remotely for senior level coastal engineering design classes. It would be of immense impact to be able to show these students first-hand the level of uncertainty and possible error in common engineering tools through comparison with the high accuracy model developed here, such that they are in a much better position to interpret the predictions when they become practicing engineers. Jointly funded by the Division of Chemical & Transport Systems, Fluid Dynamics & Hydraulics (FDH) program, and the Division of Ocean Sciences (OCE).