A Combined Computational and Experimental Investigation of Swirling Jets

旋转射流的计算与实验相结合的研究

• 批准号: 9523291
• 负责人: Tony Maxworthy
• 金额: $ 35万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-10-01 至 1999-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9523291&HistoricalAwards=false
• 关键词: Combined; Computational; Experimental; Investigation; Swirling

ABSTRACT Proposal Number: CTS-9523291 PI: Maxworthy This is a comprehensive and carefully integrated computational and experimental investigation of the evolution of swirling jets. These flows are of practical significance in a broad range of applications. In spite of this practical significance, the mechanisms that govern their spatio-temporal dynamics of these flows are poorly understood. Swirling jets are subjected to both shear and centrifugal instabilities and therefore exhibit a rich and varied set of disturbance modes. The generation, existence, and interaction of these mechanisms has not been investigated in any detail. It is expected that the identification, quantification, and eventual control of the governing structures by means of vortex dynamics and direct Navier-Stokes simulations, as well as experimental DPIV measurements will significantly advance the state of the art in a variety of propulsion, combustion and mixing applications.

建议编号：CTS-9523291 PI：MAXWORTH这是一项关于旋转射流演化的全面和仔细集成的计算和实验研究。这些流动在广泛的应用中具有实际意义。尽管有这样的实际意义，但人们对这些流动的时空动力学机制知之甚少。旋转射流同时受到剪切不稳定性和离心不稳定性的影响，因此表现出丰富多样的扰动模式。这些机制的产生、存在和相互作用还没有得到详细的研究。预计通过涡流动力学和直接纳维斯托克斯模拟以及实验DPIV测量对调节结构的识别、量化和最终控制将显著提高各种推进、燃烧和混合应用中的技术水平。