抄録
It is known that the Eulerian-Lagrangian approaches for dispersive multiphase flows can simulate detailed flow structures with a much better spatial resolution than the Eulerian-Eulerian approaches. However, there are still unsettled problems regarding the calculation method for two-way interaction. Especially, numerical instability due to the dispersion's migration beyond computational mesh is a serious issue for accurate prediction of flow instability in multiphase systems as well as multiphase turbulent flows. This paper describes revised methods for calculating the continuous phase flow which is induced by the spherical dispersion's migration. Basic principle of the methods are of introduction of template functions which convert discrete mass and momentum sources of the dispersion to spatially continuous sources. Performance of Gaussian and sine wave's template functions are examined and good pridictionability of local two way interaction have been confirmed.
