# Effects of Reynolds number and Stokes number on particle-pair relative velocity in isotropic turbulence: a systematic experimental study

@article{Dou2017EffectsOR,
title={Effects of Reynolds number and Stokes number on particle-pair relative velocity in isotropic turbulence: a systematic experimental study},
author={Zhongwang Dou and Andrew D. Bragg and Adam L. Hammond and Zach Liang and Lance R. Collins and Hui Meng},
journal={Journal of Fluid Mechanics},
year={2017},
volume={839},
pages={271 - 292}
}
• Published 6 November 2017
• Physics
• Journal of Fluid Mechanics
The effects of Reynolds number ( $R_{\unicode[STIX]{x1D706}}$ ) and Stokes number ( $St$ ) on particle-pair relative velocity (RV) are investigated systematically using a recently developed planar four-frame particle tracking technique in a novel homogeneous and isotropic turbulence chamber. We compare the measured results with direct numerical simulation (DNS), verifying whether the conclusions of the DNS for simplified conditions and limited $R_{\unicode[STIX]{x1D706}}$ are still valid in…
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