Collaborative Research Utilizing NEES Facilities: Landslide Generated Tsunamis and Runup

这一研究项目旨在更好地了解海啸以及近岸山体滑坡，包括空中山体滑坡和水下山体滑坡所产生的海啸的相关情况。该项目涉及一个综合的实验和理论(数值)部分，以开发基于两相雷诺平均Navier-Stokes(RANS)方程和离散元模型(DEM)的模拟模型。除了测量自由表面高度和助跑高度外，还将使用光学技术，如粒子成像测速仪(PIV)，详细测量流体速度和材料滑动速度。大型实验将在俄勒冈州立大学NEES(地震工程模拟网络)波浪盆地进行。目标是：(1)表征三维固体滑坡产生的波，以及颗粒(材料)滑坡开始、变形和传播过程中产生的波；(2)参数化颗粒滑坡和固体滑坡引起的与海啸相关的抬升和滩涂淹没；(3)提高海啸、岸线和移动的颗粒和固体滑坡之间复杂动力学相互作用的数值模型的能力；(4)用高质量的实验数据建立研究颗粒和固体滑体产生的波浪的基准问题，以验证数值模拟模型。这项研究是在几个传统的科学和工程领域：流体力学、固体力学、土力学和应用数学的交界处进行的。它将分析和实验方法与实验测量相结合，导致了新的和改进的数值模型的合理发展。此外，这项研究的结果将纳入光盘的修订本：《海啸：理解巨浪》，已分发给许多高中、科学博物馆、图书馆和研究机构。将建立一个网站，传播有关研究进展和研究结果的信息。

This research project seeks a better understanding of tsunamis, and the associated runup, of tsunamis generated by near shore landslides, including sub-aerial and submerged landslides. The project involves an integrated experimental and theoretical (numerical) component to develop simulation models based on the two-phase Reynolds Averaged Navier-Stokes (RANS) equations and the discrete element model (DEM). Besides the measurements of free surface elevations and runup heights, optical techniques, such as Particle Imaging Velocimetry (PIV), will be used to measure both fluid velocities and materials slide velocities in detail. The large-scale experiments will be performed at the Oregon State University NEES (Network for Earthquake Engineering Simulation) wave basin.The objectives are: (1) to characterize waves generated by three-dimensional solid body slides, and during the inception, deformation, and propagation of granular (material) landslides; (2) to parameterize the run-up and shoreward inundation associated with tsunamis generated by granular and solid body landslides; (3) to improve the capability of numerical models of the complex dynamic interactions among tsunami, shoreline, and moving granular and solid body slides; and (4) to establish benchmark problems for the study of waves generated by granular and solid body slides with high quality experimental data for validating numerical simulation models.The research operates at the interface between several traditional fields of science and engineering: fluid dynamics, solid mechanics, soil mechanics and applied mathematics. It integrates analytical and experimental approaches with measurements from experiments, leading to the rational development of new and improved numerical models. In addition, the results of this study will be incorporated into the revision of a CD-ROM; Tsunami: Understanding the Giant Wave, which has been distributed to many high schools, science museums, libraries, and research institutes. A web site will be established to disseminate information on research progress and findings.