U.S.-Korea Cooperative Research on Effects of Rotation on Density Stratified Flows: Basic Flow Problems in CylindricalGeometries

该提案要求提供资金，允许丹尼尔T。 瓦伦丁，机械工程系，克拉克森 大学，追求与博士。在敏贤，部门 韩国科学高等研究院机械工程 和技术（KAIST）为期24个月， 合作研究的影响， 密度分层流：基本流动问题 圆柱形几何形状。 合作者将调查 被限制在其中的液体的时间依赖运动 圆柱形罐，其由施加的热诱导 梯度和旋转速度的变化， 这些集装箱。 本研究的主要目的是 为了进一步了解旋转的动力学， 密度分层流体的流动。 以下三 将解决计算问题，即， 预测（1）“浴缸”或排水管涡流的影响 关于密度分层流体从 圆柱形槽，（2）三维涡流 有助于分层流体旋转的相互作用 在最初静止的旋转圆柱形容器中，以及 (3)与混合相关的现象 分层流体在圆柱形容器中通过中心 位于旋转盘上。 PI将扩展他的四阶计算算法， 处理具有旋转和分层的流动。 朝鲜 合作者将进行一系列实验， 包括所提出的三个问题的结构。 他 也将把他的计算方法应用到一些 在美国计算的案件，以建立更强有力的 预测的有效性。 要解决的问题 在热能储存方面具有重要的技术意义 设计的储罐、流通式储罐和混合装置 以混合不同密度的可混溶流体。 的 合作者在以下领域具有丰富的经验： 这项研究。 解决问题的办法， 该项目将有利于美国， 韩国 该项目与《公约》的目标有关， 美国--韩国合作科学计划，旨在 提高美国和韩国之间的合作水平 科学家和工程师通过科学交流， 信息、想法、技能和技术， 在互惠互利的问题上进行合作。 韩国 参与由韩国科学和 工程基金会。

This proposal requests funds to permit Dr. Daniel T. Valentine, Department of Mechanical Engineering, Clarkson University, to pursue with Dr. Jae Min Hyun, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology (KAIST) for a period of 24 months, a program of cooperative research on the effects of rotation on density stratified flows: basic flow problems in cylindrical geometries. The collaborators will investigate the time-dependent motions of liquids confined within cylindrical tanks that are induced by imposed thermal gradients and rotational speed changes at the walls of these containers. The principal goal of this research is to further the understanding of the dynamics of rotating flows of density stratified fluids. The following three computational problems will be addressed, namely, predicting (1) the effect of the "bathtub" or drain vortex on the draining of density stratified fluid from a cylindrical tank, (2) the three-dimensional vortex interactions that aid in the spin-up of a stratified fluid in a rotating cylindrical container initially at rest, and (3) the phenomena associated with the mixing of a stratified fluid in a cylindrical container by a centrally located rotating disk. The PI will extend his 4th-order computational algorithm to handle flows with rotation and stratification. The Korean collaborator will conduct a series of experiments that will include the configurations of the three problems posed. He also will apply his computational method to some of the cases computed in the U.S. to establish more strongly the validity of the predictions. The problems to be addressed are of technological importance in thermal energy storage tanks, flow-through reservoirs, and mixing devices designed to mix miscible fluids of different densities. The collaborators have considerable experience in the field of this research. The solution to the problems addressed by this project would be beneficial to the United States and Korea. This project is relevant to the objectives of the U.S.-Korea Cooperative Science Program which seeks to increase the level of cooperation between U.S. and Korean scientists and engineers through the exchange of scientific information, ideas, skills, and techniques and through collaboration on problems of mutual benefit. Korean participation is supported by the Korea Science and Engineering Foundation (KOSEF).