0538048 - ÚH 2022 RIV CH eng J - Článek v odborném periodiku
Messa, G. V. - Malin, M. - Matoušek, Václav
Parametric study of the beta-sigma two-fluid model for simulating fully suspended slurry flow: Effect of flow conditions.
Meccanica. Roč. 56, č. 5 (2021), s. 1047-1077. ISSN 0025-6455. E-ISSN 1572-9648
Institucionální podpora: RVO:67985874
Klíčová slova: slurry flows * beta-omega two-fluid model * two fluid models * finite volume formulation
Obor OECD: Fluids and plasma physics (including surface physics)
Impakt faktor: 2.538, rok: 2021 ; AIS: 0.495, rok: 2021
Způsob publikování: Open access
Web výsledku:
https://link.springer.com/article/10.1007/s11012-021-01314-6DOI: https://doi.org/10.1007/s11012-021-01314-6

As proven in a recently published paper [Messa GV, Matousˇek V (2020) Analysis and discussion of two fluid modelling of pipe flow of fully suspended slurry. Powder Technol 30:747 768.], the b-r two-fluid model is capable of accurately reproducing the main features of turbulent, fully-suspended slurry flows in horizontal pipes provided that suitable values of the two parameters b and r are chosen. At present, the case-specific nature of b and r and their lack of a clear physical meaning are the main obstacles that must be overcome to give the b-r two-fluid model value not only as interpretative tool, but also as a predictive one. An important preliminary step to achieve this goal is to disclose the mathematical essence of the b-r two-fluid model, namely, to interpret the fluid-dynamic solution on the grounds of the structure of the differential and discretized equations. Such a methodological approach is applied here to the benchmark case of turbulent slurry flow between two infinite, horizontal, parallel plates, focusing, in particular, on the influence of the bulkmean velocity of the slurry and the volumetric concentration of the solids in the flow. The study provides not only deeper insight into the b-r model, but also indicates important implications for alternative two-fluid models.
Trvalý link: http://hdl.handle.net/11104/0319058