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arXiv · 1712.07506

Particle-Pair Relative Velocity Measurement in High-Reynolds-Number Homogeneous and Isotropic Turbulence Using 4-Frame Particle Tracking Velocimetry

Zhongwang Dou·Peter J. Ireland·Andrew D. Bragg·Zach Liang·Lance R. Collins·Hui Meng
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Abstract

The radial relative velocity between particles suspended in turbulent flow plays a critical role in droplet collision and growth. We present a simple and accurate approach to RV measurement in isotropic turbulence - planar 4-frame particle tracking velocimetry - using routine PIV hardware. This study demonstrates the feasibility of accurately measuring RV using routine hardware and verifies, for the first time, the path-history and inertial filtering effects on particle-pair RV at large particle separations experimentally.

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Zhongwang Dou, Peter J. Ireland, Andrew D. Bragg, Zach Liang, Lance R. Collins, Hui Meng. 2017-12-20. Particle-Pair Relative Velocity Measurement in High-Reynolds-Number Homogeneous and Isotropic Turbulence Using 4-Frame Particle Tracking Velocimetry. https://doi.org/10.1007/s00348-017-2481-0

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