Details

Autor(en) / Beteiligte

• Hammerich, Simon
• Gleiß, Marco
• Kespe, Michael
• Nirschl, Hermann

Titel

An Efficient Numerical Approach for Transient Simulation of Multiphase Flow Behavior in Centrifuges

Ist Teil von

• Chemical engineering & technology, 2018-01, Vol.41 (1), p.44-50

Ort / Verlag

Frankfurt: Wiley Subscription Services, Inc

Erscheinungsjahr

2018

Quelle

Wiley Online Library - AutoHoldings Journals

Beschreibungen/Notizen

• Solid bowl centrifuges are applied for the separation of small particles in a variety of industries. However, the particles accumulate at the rotor wall, which leads to a time‐dependent separation efficiency. A numerical approach for spatial and time‐resolved simulations of the separation process in a tube centrifuge is developed and some numerical results are presented. The back coupling of the dispersed and sedimented particles is realized by locally defined viscosity functions. The open source computation software OpenFOAM was used to simulate the turbulent multiphase flow within the centrifuge. The numerical investigations demonstrate the significant influence of the growing sediment on the flow conditions and of the rheological behavior of the sediment on the sediment shape. Growing computational power and developed methods establish numerical simulations as an alternative to costly experiments, leading to highly resolved results and advanced process knowledge. A time‐efficient numerical approach was developed for simulating the separation process considering buildup and material behavior of the sediment within solid bowl centrifuges.