International Journal of Multiphase Flow 68 (2015) 80–92 Contents lists available at ScienceDirect International Journal of Multiphase Flow journal homepage: www.elsevier.com/locate/ijmulﬂow Modelling of gas–solid turbulent channel ﬂow with non-spherical particles with large Stokes numbers Berend van Wachem , Marian Zastawny, Fan Zhao, George Mallouppas Division of Thermoﬂuids, Department of Mechanical Engineering, Imperial College London, Exhibition Road, London SW7 2AZ, United Kingdom ar ti c l e i nf o ab stra ct Article history: This paper describes a complete framework to predict the behaviour of interacting non-spherical parti- Received 7 March 2013 cles with large Stokes numbers in a turbulent ﬂow. A summary of the rigid body dynamics of particles Received in revised form 3 October 2014 and particle collisions is presented in the framework of Quaternions. A particle-rough wall interaction Accepted 9 October 2014 model to describe the collisions between non-spherical particles and a rough wall is put forward as well. Available online 22 October 2014 The framework is coupled with a DNS-LES approach to simulate the behaviour of horizontal turbulent channel ﬂow with 5 differently shaped particles: a sphere, two types of ellipsoids, a disc, and a ﬁbre. Keywords: The drag and lift forces and the torque
International Journal of Multiphase Flow – Elsevier
Published: Jan 1, 2015
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