Vortex Breakdown in Turbulent Swirling Flows

湍流旋流中的涡流破坏

• 批准号: 9613143
• 负责人: Robert Spall
• 金额: $ 15.83万
• 依托单位: Utah State University
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-06-15 至 2000-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9613143&HistoricalAwards=false
• 关键词: Vortex; Breakdown; Turbulent; Swirling; Flows

ABSTRACT Proposal Number: CTS-9613143 Principal Investigator: Spall, Utah State 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 numerical component. A matching grant was made to the Naval Postgraduate School for the experimental phase (CTS-9612528).

摘要 提案编号：CTS-9613143主要研究者：Spall，犹他州 本研究涉及两所大学，其目的是：（i）进行互补的实验和数值研究，以探索湍流旋流中旋涡破裂的结构和动力学; ㈡阐明现象的物理性质，并提供档案资料-高质量的实验数据，用于评估和验证各向异性湍流模型的CFD代码，以及当前和未来的科学研究。和技术的发展;（iii）仔细评估现有的现象学模型;（iv）发展理解湍流对涡流破裂的影响，以应对其在空气动力学、燃烧以及一般情况下在采用涡流动力学的装置中开发有效流量控制策略方面的智力挑战和技术应用。 它的目的是，这项研究将导致可靠的计算机代码，可用于工业研究和设计。 这笔补助金用于数字部分。 向海军研究生院提供了试验阶段的相应赠款（CTS-9612528）。