Vortex Breakdown in Turbulent Swirling Flows

项目编号：CTS 9612528项目负责人：Sarpkaya， Naval Postgraduate School。本研究涉及两所大学，目的是：(i)开展互补的实验和数值研究，以探索湍流涡旋流中涡旋击穿的结构和动力学；（ii）阐明现象的物理性质，并为评估和验证具有各向异性湍流模型的CFD代码以及当前和未来的科学和技术发展提供档案质量的实验数据；仔细评价现有的现象学模型；（iv）了解湍流对涡旋破裂的影响，以应对其在空气动力学、燃烧方面的智力挑战和技术应用，以及在采用涡流动力学的设备中开发有效的流动控制策略。本研究旨在产生可用于工业研究和设计的可靠计算机代码。这笔拨款是用于实验部分的。犹他州立大学的数值阶段（CTS-9613143）获得了匹配拨款。

ABSTRACT Proposal Number: CTS 9612528 Principal Investigator: Sarpkaya, Naval Postgraduate School The objectives of this investigation, involving two universities, are: (i) To carry out complementary experimental and numerical research in order to explore the structure and dynamics of vortex breakdown in turbulent swirling flows; (ii) To elucidate the physics of the phenomena and provide archival-quality experimental data for the assessment and validation of CFD codes with anisotropic turbulence models and for current as well as future scientific and technological developments; (iii) To carefully assess existing phenomenological models; (iv) To develop an understanding of the consequences of turbulence on vortex breakdown for its intellectual challenge and technological applications in aerodynamics, in combustion, and in general, in the development of effective flow control strategies in devices employing swirl dynamics. It is intended that this study would lead to reliable computer codes which might be used for industrial research and design. This grant is for the experimental component. A matching grant was made to the Utah State University for the numerical phase (CTS-9613143).