TY - JOUR

T1 - CFD-DEM Modeling of Shaft Furnaces Using the Volume Fraction Smoother Approach

AU - Spijker, Christoph

AU - Pollhammer, Werner

AU - Raupenstrauch, Harald

N1 - Publisher Copyright: © 2023 The Authors. Chemical Engineering & Technology published by Wiley-VCH GmbH.

PY - 2023/7

Y1 - 2023/7

N2 - Shaft furnaces are widely used in high-temperature processes for granular materials due to their high energy efficiency. The modeling of these furnaces is challenging because of large domains and long process times. Small geometric details like the natural gas burner nozzles demand a fine grid on the computational fluid dynamics (CFD) side, resulting in a grid size smaller than the particle size. Resolving a discrete element particle over several cells is computationally expensive. Interpolation methods on non-structured grids are complex. In order to provide a fast and simple solution, the volume fraction smoother was developed, and to shorten the calculation time, the time scale splitting method, which separates the time steps for CFD and the discrete-element method (DEM), was introduced.

AB - Shaft furnaces are widely used in high-temperature processes for granular materials due to their high energy efficiency. The modeling of these furnaces is challenging because of large domains and long process times. Small geometric details like the natural gas burner nozzles demand a fine grid on the computational fluid dynamics (CFD) side, resulting in a grid size smaller than the particle size. Resolving a discrete element particle over several cells is computationally expensive. Interpolation methods on non-structured grids are complex. In order to provide a fast and simple solution, the volume fraction smoother was developed, and to shorten the calculation time, the time scale splitting method, which separates the time steps for CFD and the discrete-element method (DEM), was introduced.

KW - Computational fluid dynamics

KW - Discrete-element method

KW - Shaft furnace

KW - Time scale splitting method

KW - Volume fraction smoother

UR - http://www.scopus.com/inward/record.url?scp=85159895882&partnerID=8YFLogxK

U2 - 10.1002/ceat.202200617

DO - 10.1002/ceat.202200617

M3 - Article

AN - SCOPUS:85159895882

VL - 46.2023

SP - 1333

EP - 1339

JO - Chemical Engineering and Technology

JF - Chemical Engineering and Technology

SN - 0930-7516

IS - 7

ER -