Holographic Measurement of Particle-Turbulence Interaction in Isotropic Turbulence

cts - 0112514 h。具有悬浮颗粒的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）技术已被有效地应用于示踪粒子（小斯托克斯数）的单相流动的研究和表征。将该方法扩展到含颗粒流体中，以“高分辨率”表征载流体的行为，以及悬浮颗粒（具有大Stokes数）和颗粒动力学的表征，仍然是一个挑战。该提案利用了PI在主办机构开发的独特的HPIV设备，试图开发一种扩展的HPIV技术，以全面表征颗粒负载湍流。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）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。

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.