Phys. Rev. Lett. 101, 114502 (2008) [4 pages]Classification of Turbulence Modification by Dispersed Spheres Using a Novel Dimensionless Number
See accompanying Physics Viewpoint A novel dimensionless parameter, the particle moment number Pa, was derived using dimensional analysis of the particle-laden Navier-Stokes equations, in order to understand the underlying physics of turbulence modification by particles. A set of 80 previous experimental measurements where the turbulent kinetic energy was modified by particles was examined, and all results could clearly be divided into three groups in Re-Pa mappings. The turbulence attenuation region was observed between the augmentation regions with two critical particle momentum numbers. © 2008 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevLett.101.114502
DOI:
10.1103/PhysRevLett.101.114502
PACS:
47.55.Kf, 47.10.A−, 47.27.−i, 47.54.De
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