A Hyperbolic Eulerian Model for Dilute Two-Phase Suspensions

DOI: 10.4236/jmp.2011.29120   PDF   HTML     5,753 Downloads   9,452 Views   Citations


Conventional modeling of two-phase dilute suspensions is achieved with the Euler equations for the gas phase and gas dynamics pressureless equations for the dispersed phase, the two systems being coupled by various relaxation terms. The gas phase equations form a hyperbolic system but the particle phase corresponds to a hyperbolic degenerated one. Numerical difficulties are thus present when dealing with the dilute phase system. In the present work, we consider the addition of turbulent effects in both phases in a thermodynamically consistent way. It results in two strictly hyperbolic systems describing phase’s dynamics. Another important feature is that the new model has improved physical capabilities. It is able, for example, to predict particle dispersion, while the conventional approach fails. These features are highlighted on several test problems involving particles jets dispersion and are compared against experimental data. With the help of a single parameter (a turbulent viscosity), excellent agreement is obtained for various experimental configurations studied by different authors

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S. Hank, R. Saurel and O. Metayer, "A Hyperbolic Eulerian Model for Dilute Two-Phase Suspensions," Journal of Modern Physics, Vol. 2 No. 9, 2011, pp. 997-1011. doi: 10.4236/jmp.2011.29120.

Conflicts of Interest

The authors declare no conflicts of interest.


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