Vortex Breakdown in Turbulent Swirling Flows

建议编号：CTS-9613143首席研究员：犹他州斯伯尔这项研究涉及两所大学，其目的是：(I)进行互补的实验和数值研究，以探索湍流旋流中涡旋破裂的结构和动力学；(Ii)阐明现象的物理，并为使用各向异性湍流模型的CFD程序的评估和验证以及对当前和未来的科学技术发展提供高质量的实验数据；(Iii)仔细评估现有的唯象模型；(4)加深对湍流对涡流破裂的影响的理解，因为它在空气动力学、燃烧以及在制定采用涡流动力学的设备中的有效流动控制策略方面存在智力挑战和技术应用。这项研究旨在产生可用于工业研究和设计的可靠的计算机代码。这项资助是针对数字部分的。向海军研究生院提供了实验阶段的等额补助金(CTS-9612528)。

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).