This paper compares coarse grid simulations completed with various filtered models to computationally very expensive resolved simulations of fluidization in a 2D setup. It was shown that the original one-marker filtered model performed best. Surprisingly, more recently presented two-marker models showed substantial deviations from the resolved simulations. Unfortunately, one-marker models are not suitable for general large-scale fluidized bed simulations. Therefore, the performance of a new two-marker model is assessed, which respects certain limits when correcting the drag force and uses a normalized filtered slip velocity. While the initial results with this new model are encouraging, substantial uncertainty still exists due to the present lack of a dedicated filtered stress model.
|Title of host publication||12th International Conference on Fluidized Bed Technology (CFB-12)|
|Place of Publication||Krakow, Poland|
|Publisher||AGH University of Science and Technology|
|Number of pages||8|
|Publication status||Published - 30 May 2017|
- filtered model
- transport phenomena
ASJC Scopus subject areas
- Fluid Flow and Transfer Processes
Fields of Expertise
- Mobility & Production
Cloete, J. H., Cloete, S., Radl, S., & Amini, S. (2017). Verification of filtered Two-Fluid Models in different flow regimes. In 12th International Conference on Fluidized Bed Technology (CFB-12) (pp. 1-8). Krakow, Poland: AGH University of Science and Technology.