MRI: Acquisition of a Large-Stroke, Piston-Type Wavemaker for Coastal Hazards Research and Education

MRI：采购大冲程活塞式造波机，用于沿海灾害研究和教育

• 批准号: 0723277
• 负责人: Daniel Cox
• 金额: $ 113.28万
• 依托单位: Oregon State University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-10-01 至 2009-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0723277&HistoricalAwards=false
• 关键词: MRI; Acquisition; Large; Stroke; Piston; MRI; Acquisition; Large; Stroke; Piston

This proposed research seeks to acquire an acquisition for a new control system for the nation's largest coastal wave flume to enable precise, large-scale simulation of hurricane waves, tsunamis, and other coastal hazards under controlled conditions in a hydraulic laboratory wave flume. This new capability will allow the research community to study a range of engineering and scientific problems in constructed and natural coastal environments, including wave impacts on coastal infrastructure; development of wave energy systems; advances in numerical modeling of fluid-structure interaction with application to coastal systems, cross-shore sediment suspension and transport related to coastal erosion and recovery after storms; dune erosion and overtopping; tsunami propagation over reefs; and environmental fluid-sediment dynamics. The high performance, large-stroke piston-type wavemaker will address both scale effects and laboratory effects by providing hurricane and tsunami waves in coastal waters at large scale with a dynamic feedback control to absorb unwanted reflected waves and tank seiche. The high performance wavemaker will provide a national asset for precision, large-scale studies enabling safer and more cost effective design of coastal infrastructure including bridges, levees, buildings and lifelines. This will lead to better practices for the repair and retrofit of existing structures and improved design codes for new construction.There is over $3T in civil infrastructure along the East and Gulf coasts of the United States vulnerable to coastal storms, and the economic and societal impacts of extreme events such as hurricanes are expected to escalate as reported by the National Science Board (NSB, 2007). More than half of the U.S. population lives within 50 miles of the coast, and more than 60% will live there by 2010. Concurrently, most of the nation's sandy coasts suffer chronic erosion due to continued sea level rise. As erosion trends continue and as population projections are realized, the Nation's coastal margins will experience significant development pressures (US Commission on Ocean Policy, 2004). At present time there is no coastal research facilities anywhere in the United States that simulate hurricane and other large storms at scales large enough to minimize scale effects. Data from this facility are archived and available to other researchers to validate numerical models and guide future development. The senior personnel encourage the shared-use of the facility through open workshops at the site. This project enhances the training of graduate students in the areas of coastal structures and coastal erosion. Research and education is integrated at the undergraduate level through a Research Experience for Undergraduates Program established at the laboratory. Education and Outreach activities are targeted to the recruitment and retention of women and minorities in engineering at the undergraduate level and to inspire K-12 students at the 3rd through 5th grade level through tours and hands-on activities.

这项拟议的研究旨在收购该国最大的沿海波浪水槽的新控制系统的收购，以在液压实验室波水槽中对飓风波，海啸和其他沿海危险进行精确的大规模模拟。 这种新的能力将使研究社区能够研究建设和自然沿海环境中的一系列工程和科学问题，包括对沿海基础设施的波浪影响；波能系统的发展；流体结构相互作用与沿海系统的数值建模的进步，与沿海侵蚀和暴风雨后恢复有关的跨国沉积物悬架以及运输的进步；沙丘侵蚀和超越；海啸繁殖珊瑚礁；和环境流体辅助动力学。 高性能，大冲程活塞型Wabemaker将通过在大规模的沿海水域提供飓风和海啸波，并通过动态反馈控制来吸收不需要的反射波和储罐Seiche，从而解决规模效应和实验室效应。 高性能Wavemaker将为精确的大规模研究提供国家资产，从而使沿海基础设施（包括桥梁，堤防，建筑物和救生线）更安全，更具成本效益的设计。 这将为现有结构的维修和改造和改进新建建筑的设计代码提供更好的实践。美国东部和美国墨西哥湾沿岸的民用基础设施的$ 3T超过$ 3T，容易受到沿海风暴的影响，以及诸如飓风等极端事件的经济和社会影响，如飓风的影响，如预计由国家科学委员会报道，由国家科学委员会（NS）（NSSB）（20077），2007年）。 超过一半的美国人口居住在海岸50英里以内，到2010年将居住60％以上。同时，由于海平面的持续上升，全国大部分的沙质海岸遭受了慢性侵蚀。随着侵蚀趋势的持续，随着人口预测的实现，美国的沿海利润率将遇到巨大的发展压力（美国海洋政策委员会，2004年）。目前，美国任何地方都没有沿海研究设施模拟飓风和其他大型风暴，以较大的规模以最大程度地减少规模效应。 该设施的数据已存档并提供给其他研究人员，以验证数值模型并指导未来的发展。 高级人员通过网站上的公开研讨会鼓励设施共享使用。 该项目增强了沿海结构和沿海侵蚀领域的研究生的培训。研究和教育是通过在实验室建立的本科生的研究经验来纳入本科层面的。 教育和外展活动的目标是通过旅行和动手活动在三年级至5年级的五年级至5年级的妇女和少数民族在工程学领域的招募和保留。