Flow regimes of inertial suspensions of finite size particles

Conference paper (2015)

Authors

I Lashgari KTH Royal Institute of Technology
Francesco Picano KTH Royal Institute of Technology, Università degli Studi di Padova
W.P. Breugem Fluid Mechanics - Mechanical, Maritime and Materials Engineering
Luca Brandt KTH Royal Institute of Technology
Research Group
Fluid Mechanics (Mechanical, Maritime and Materials Engineering) (TU Delft)
More Info
expand_more

Published Date

2015

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Mechanical, Maritime and Materials Engineering

Department

Process and Energy

Research Group

Fluid Mechanics

Abstract

Inertial regimes in a channel flow of suspension of finite-size neutrally buoyant particles are studied for a wide range of Reynolds numbers: 500 Re 5000, and particle volume fractions: 0 0:3. The flow is classified in three different regimes according to the phase-averaged stress budget across the channel [2]. The laminar viscous regime at low Re and - where the viscous stress is the dominating term in the budget, the turbulent regime at high Re and relatively low where the momentum is mainly transferred by the action of the Reynolds stress and the inertial shear-thickening regime where the particle stress contributes the most to the significant enhancement of the wall shear stress. Particle distribution and dispersion properties provide additional evidence for the existence of the three different regimes.