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

• 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.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Energiteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Energy Engineering (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Kemiteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Chemical Engineering (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)

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