Modelling and Numerical Calculation of Turbulent Gas-Solids Flows with the Euler/Lagrange Approach

• Main Author: Martin Sommerfeld
• Format: Article
• Language: English
• Published: Hosokawa Powder Technology Foundation 2014-05-01
• Series: KONA Powder and Particle Journal
• Online Access: https://www.jstage.jst.go.jp/article/kona/16/0/16_1998022/_pdf/-char/en

The paper summarises recent developments of the Euler/Lagrange approach for the prediction of particulate two-phase flows. Based on detailed experiments, the modelling of particle-wall collisions, including the effect of wall roughness, could be considerably improved. Moreover, a stochastic approach was developed for modelling inter-particle collisions which were found to be quite important even for low particle mass loading. Model calculations with inter-particle collisions were validated based on large eddy simulations for a homogeneous isotropic turbulence field. The effect of inter-particle collisions on the development of a particle-laden horizontal channel flow was analysed in detail by varying particle size and mass loading. Numerical predictions were performed for pneumatic conveying in a horizontal pipe and compared with measurements by phase-Doppler anemometry in order to further validate the developed models.