Swash Zone Hydrodynamics

0095834/Liu本项目的目的是开发一种改进的能力，用于模拟海滩（即，冲刷带）上的波浪爬高。 该项目将解决的主要影响之一是如何将联合收割机模拟海滩上的自由流与渗透性海滩内的流动交换的影响相结合。 该方法将结合联合收割机数值模拟的努力，比较数据的现场实验中的冲刷区在加利福尼亚州的海滩和实验室实验将在康奈尔大学进行。 建模方法是联合收割机RANS模型，目前用于通过一个不可渗透的海滩的流量，通过一个可渗透的海滩的模型。 将努力改进海滩内流动的建模，方法是将雷诺平均技术的模拟应用于多孔介质中的流动。 此外，将修改RANS模型的深度平均版本，以包括与透水海滩相互作用的参数化。 实验室工作将着眼于孤立波和周期波列与几种类型的平面海滩，包括光滑的不可渗透，粗糙的不可渗透，多孔海滩的相互作用。 将用于指导模型开发的现场结果来自圣地亚哥斯克里普斯海滩和托里松树海滩的实验。 后面这些实验是由B进行的。Raubenheimer是谁在这个项目上合作的一个分包合同从康奈尔大学WHOI。

0095834/LiuThe intent of this project is to develop an improved capability for modeling wave run-up on a beach, i.e. the swash zone. One of the major effects that the project will tackle is how to combine modeling of the free flow over the beach with the effects of exchange with flow within the permeable beach. The approach will combine numerical modeling efforts with comparisons to data from field experiments in the swash zone on Californian beaches and from laboratory experiments to be conducted at Cornell. The modeling approach is to combine a RANS model, presently used for flow over an impermeable beach, with a model for flow through a permeable beach. An effort will be made to improve the modeling of flow within the beach by applying an analogue of the Reynolds averaging technique to flow in porous media. In addition a depth averaged version of the RANS model will be modified to include parameterizations of the interaction with permeable beaches. The laboratory work will look at the interaction of solitary waves and periodic wavetrains with several types of planar beach including smooth impermeable, rough impermeable, and porous beaches. The field results that will be used to guide the model development are from experiments at Scripps Beach and Torrey Pines Beach in San Diego. These latter experiments were carried out by B. Raubenheimer who is collaborating in this project on a sub-contract from Cornell to WHOI.