CAREER: Fluid - Sediment Interactions over Complex Coastal Topography

ABSTRACTPROPOSAL没有。研究方向：复杂海岸地形下的流体-沉积物相互作用研究方向：复杂海岸地形下的流体-沉积物相互作用研究方向：复杂海岸地形下浅海非粘性沉积物运移的预测能力。在从沙粒到海岸线的尺度上，海岸环境在波浪、平均洋流和海滩之间表现出复杂的反馈。这项研究关注的是泥沙在小尺度平坦和波纹河床上的运移。模拟和观测相结合的努力提供了一个令人兴奋的机会，可以获得控制沿海地区流体-沉积物界面的主要过程的新知识。一个新的基于过程的模型将三维水流、输沙和形态模块结合起来，用于预测河床的形成、迁移和总输沙。模拟的一个关键特征是在完全相同的条件下对实验数据进行验证。这项工作的广泛影响包括提高对非粘性沉积物运输的基本理解，可能导致大规模海滩演变的预测能力取得重大进展。将在研究的基础上发展一系列的讲座，并在现有的课程中加入一门关于泥沙输送的实验课程。研究、教育和多样性的整合利用了俄亥俄州立大学现有的资源，成功地开展了外展项目。工程领域多样化的努力将侧重于为研究生提供一个文化和性别多样化的环境，并指导年轻女性培养茁壮成长所需的技能和兴趣。特别值得注意的是，参与未来工程师暑期工作坊，以激发初中年轻女性对海岸工程的兴趣。

ABSTRACTPROPOSAL NO.: CTS-0348203PRINCIPAL INVESTIGATORS: D. FOSTERINSTITUTION: OHIO STATE UNIVERSITY CAREER: FLUID-SEDIMENT INTERACTIONS OVER COMPLEX COASTAL TOPOGRAPHYThe proposed research will significantly advance predictive capability for non-cohesive sediment transport over complex topographies in shallow coastal waters. The coastal environment exhibits complex feedback between waves, mean currents, and beaches at scales ranging from sand grains to coastlines. This effort concerns the transport of sediment over small-scale flat and rippled beds. A combined modeling and observational effort provides an exciting opportunity to gain new knowledge of the dominant processes that govern the fluid-sediment interface in the coastal region. A new process-based model will couple three-dimensional flow, sediment transport, and morphologic modules for the prediction of bedform generation, migration, and total sediment transport. A key feature of the simulations is the validation against experimental data at the exact same conditions. Broad impacts of the work include improved fundamental understanding of non-cohesive sediment transport potentially leading to significant advances in predictive capabilities of large-scale beach evolution. A lecture series will be developed based on the research and a laboratory course on sediment transport will be incorporated into an existing course. The integration of research, education and diversity capitalizes on the existing resources at Ohio State University for a successful outreach program. Efforts to diversify the engineering field will focus on providing a culturally and gender diverse environment for graduate students and mentoring young women to develop the skills and interests needed to thrive. Participation with the Future Engineers Summer Workshop to stimulate the interest of young women in junior high school in coastal engineering is especially noteworthy.