Classification of Turbulence Modification by Dispersed Spheres Using a Novel Dimensionless Number
2008; American Physical Society; Volume: 101; Issue: 11 Linguagem: Inglês
10.1103/physrevlett.101.114502
ISSN1092-0145
AutoresTomohiko Tanaka, John K. Eaton,
Tópico(s)Fluid Dynamics and Turbulent Flows
ResumoA 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.
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