• Featured in Physics
  • Editors' Suggestion

Classification of Turbulence Modification by Dispersed Spheres Using a Novel Dimensionless Number

Tomohiko Tanaka and John K. Eaton
Phys. Rev. Lett. 101, 114502 – Published 8 September 2008
Physics logo See Viewpoint: Particles go with the flow

Abstract

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.

  • Figure
  • Figure
  • Received 1 March 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.114502

©2008 American Physical Society

Viewpoint

Key Image

Particles go with the flow

Published 8 September 2008

A novel dimensionless parameter allows prediction of whether dispersed particles in a turbulent flow enhance or attenuate the turbulence.

See more in Physics

Authors & Affiliations

Tomohiko Tanaka* and John K. Eaton

  • Department of Mechanical Engineering, Stanford University, 488 Escondido Mall, Bldg. 500, Stanford, California 94305-3030, USA

  • *Present address: Central Research Laboratory, Hitachi Ltd. tomohiko.tanaka.nx@hitachi.com
  • eatonj@stanford.edu

Article Text (Subscription Required)

Click to Expand

References (Subscription Required)

Click to Expand
Issue

Vol. 101, Iss. 11 — 12 September 2008

Reuse & Permissions
Access Options
Author publication services for translation and copyediting assistance advertisement

Authorization Required


×
×

Images

×

Sign up to receive regular email alerts from Physical Review Letters

Log In

Cancel
×

Search


Article Lookup

Paste a citation or DOI

Enter a citation
×