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On the Robustness of Two-Phase Flow Models for Bubbly Flows

Henrik Ström (Institutionen för tillämpad mekanik, Strömningslära) ; Dia Zeidan
AIP Conference Proceedings (2016)
[Konferensbidrag, refereegranskat]

Lack of robustness, manifesting as an inability to suppress the growth of numerical round-off errors, is a well-known challenge with many conventional two-fluid models. In the current work, a hyperbolic two-phase mixture model in conservative form is analysed and assessed in relation to a single-pressure two-fluid model. The robustness of the simulation results indicates that the mixture model and the associated numerical methods may be well suited to enable high-resolution simulations of more complex two-phase phenomena. In particular, significant advantages in terms of stability and robustness of the mixture model formulation are found in comparison to the non-hyperbolic and non-conservative single-pressure two-fluid model.



Denna post skapades 2016-09-20.
CPL Pubid: 242088