Experimentally Verified Three-dimensional Free Surface Fluid Simulation

摘要CTS-9422762拉德南方卫理公会大学 拟议的研究旨在开发一个实验验证，三维，有限体积法来模拟流体流动的自由表面正在经历严重的变形。计算工作将得到补充的实验工作，使用明渠流量装置和高速摄像机，以实验确定的自由表面的形状，在瞬态和稳态流动的明渠含有障碍物。水槽中水的晃动和波浪破碎的模拟将用于研究非常活跃的表面上湍流涡度衰减的重要机制，以及湍流在破碎和溢出波浪下方渗透到水体中的重要机制。为了补充通过使用高速摄像机获得的定性数据，将使用数字粒子成像速度计来获得定量速度数据。 所提出的模拟方法将代表自由表面流体动力学的一个重大进展。从实际的角度来看，扩展到三维是最重要的，因为模拟必须是三维的，以使其能够实现其作为制造生产力工具的潜力，比如压铸，或者作为暴力流体相互作用的逼真模拟器，例如在水冲过堤坝和桥梁支柱周围。

ABSTRACT CTS-9422762 RAAD SOUTHERN METHODIST UNIVERSITY The proposed research seeks to develop an experimentally verified, three-dimensional, finite volume method to simulate fluid flows whose free surface is undergoing severe deformations. The computational effort will be complemented by experimental work using an open channel flow apparatus and a high speed video camera to experimentally determine the shape of the free surface during transient and steady-state flows in an open channel containing obstructions. Simulations of water sloshing and waves breaking in a tank will be used to investigate the important mechanisms of the decay of turbulent vorticity on a very active surface and the penetration of turbulence into the main body of water below breaking and spilling waves. To complement the qualitative data obtained by use of the high speed camera, a digital particle imaging velocimeter will be used to obtain quantitative velocity data. The proposed simulation method will represent a significant advance in free surface fluid dynamics. From a practical standpoint, the extension to three dimensions is most important, since the simulation must be three-dimensional to enable it to realize its potential as a manufacturing productivity tool in, say, die casting, or as a realistic simulator of violent fluid interactions such as in water rushing over and around dikes and bridge pillars.