Holographic Measurement of Particle-Turbulence Interaction in Isotropic Turbulence

各向同性湍流中粒子与湍流相互作用的全息测量

• 批准号: 0112514
• 负责人: Hui Meng
• 金额: $ 20万
• 依托单位: SUNY at Buffalo
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-12-01 至 2005-11-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0112514&HistoricalAwards=false
• 关键词: Holographic; Measurement; Particle; Turbulence; Interaction

CTS-0112514H. Meng, SUNY BuffaloPhysical characterization of turbulent flow with suspended particles has remained a challenge requiring much effort in both direct computational analysis as well as accurate high resolution measurements. The holographic particle image velocimetry (HPIV) technique has been applied effectively for investigation and characterization of single phase flows seeded with tracer particles (small Stokes number). Extension of this method to particle-laden flows for 'high-resolution' characterization of the behavior of the carrier fluid as well as characterization of the suspended particles (with large Stokes number) and particle dynamics has remained a challenge.This proposal makes use of the unique HPIV facilities developed by the PI at the host institution in an attempt to develop an extended HPIV technique for full characterization of the particle-laden turbulent flow. If successful, the approach is particularly effective since the measurements can be at the spatial resolution comparable to the resolution in direct numerical simulations (DNS). This will allow direct comparison with DNS results, as well as complement the more engineering based models and large eddy simulations.

CTS-0112514H。孟，纽约州立大学布法罗分校悬浮颗粒湍流的物理表征仍然是一个挑战，需要在直接计算分析和精确的高分辨率测量方面付出大量努力。 全息粒子图像测速（HPIV）技术已有效地应用于研究和表征示踪粒子（小斯托克斯数）的单相流。 将这种方法扩展到载有颗粒的流动，以“高分辨率”表征载液的行为以及悬浮颗粒（具有大斯托克斯数）和颗粒动力学的表征仍然是一个挑战。该提案利用主持机构的 PI 开发的独特 HPIV 设施，试图开发一种扩展的 HPIV 技术，以全面表征载有颗粒的湍流。 如果成功，该方法特别有效，因为测量的空间分辨率可以与直接数值模拟（DNS）中的分辨率相当。 这将允许与 DNS 结果进行直接比较，并补充更多基于工程的模型和大涡模拟。