COOPERATIVE RESEARCH PROGRAM WITH KOREA: CONTROL OF SEPARATED FLOWS

小行星9500160 该奖项提供资金，允许马克N。Glauser，克拉克森大学机械和航空工程系，与韩国科学技术高级研究院机械工程系的Hyung Jin Sung博士一起进行为期24个月的关于分离湍流控制的合作研究计划。 本文将研究流体在海崖体（块体）上的湍流流动。 对于该流程，合作者将（1）研究控制对本征正交分解（POD）特征函数空间结构的影响，以及（2）评估基于POD的低维动力系统模型在该流程中是否可行。 基本分离流在许多实际的流体工程情况下，如管道和热交换器中遇到。 在相似雷诺数下，与无分离的流动相比，分离点下游的分离、再附着和再循环流动大大增加了传递的热量、质量和动量。 因此，本研究具有重要的理论意义和实践意义。 合作者在分离流和POD在各种流中的应用方面具有丰富的经验。 它们的长处是相辅相成的，因此它们的合作努力应该真正有益于促进对分离流的控制的理解。 该项目与美国的目标有关-韩国合作科学计划，旨在通过科学信息，思想，技能和技术的交流以及通过互利问题的合作来提高美国和韩国科学家和工程师之间的合作水平。 韩国对该项目的参与得到了韩国科学和工程基金会的支持。 ***

9500160 Glauser This award provides funds to permit Dr. Mark N. Glauser, Department of Mechanical and Aeronautical Engineering, Clarkson University, to pursue with Dr. Hyung Jin Sung, Department of Mechanical Engineering, Korea Advanced Institute of Science and Technology, for 24 months, a program of cooperative research on control of separated turbulent flows. The turbulent flow of a fluid over a bluff body (block) will be studied. For this flow, the collaborators will (1) study the influence of control on the spatial structure of the Proper Orthogonal decomposition (POD) eigenfunctions and (2) assess whether a POD based low dimensional dynamical systems model is feasible in this flow. Fundamental separated flows are encountered in many practical fluid engineering situations such as ducts and heat exchangers. The separated, reattached, and recirculating flow downstream of the separation point greatly enhance the amount of heat, mass, and momentum that are transferred, when compared to flows without separation at similar Reynolds number. Thus, this research is of practical as well as theoretical interest. The collaborators have extensive experience with separated flows and the application of the POD to various flows. Their strengths complement one another so that their cooperative effort should be truly beneficial in furthering understanding of the control of separated flows. 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 in the project is supported by the Korea Science and Engineering Foundation (KOSEF). ***