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Article

Developing particle-laden turbulent pipe-flow

Authors: Strömgren, T., Brethouwer, G.B., Amberg, G.A., Johansson, A.V.J.
Document Type: Conference
Pubstate: Published
Journal: 7th Int. Conf. on Multiphase Flow, May 30 - June 4, 2010, Tampa, Florida, USA
Volume:   
Year: 2010

Abstract

An Eulerian turbulent two phase flow model using kinetic theory of granular flows for the particle phase was developed in order to study evolving upward turbulent gas particle pipe flow. The model takes into account the feedback of the particles. Simulations show that the pipe length required for particle laden turbulent flow to become fully developed is up to five times longer than an unladen flow. To increase the understanding of the dependence of the development length on particle diameter a simple model for the expected development length was derived. It shows that the development length becomes shorter for increasing particle diameters, which agrees with simulations. The initial slip velocity has also a large influence on the development length.