A new drag correlation from fully resolved simulations of flow past monodisperse static arrays of spheres

摘要: Fully resolved simulations of flow past fixed assemblies monodisperse spheres in face-centered-cubic array or random configurations, are performed using an iterative immersed boundary method. A methodology has been applied such that the computed gas–solid force is almost independent grid resolution. Simulations extend previously similar studies to a wider range solids volume fraction ( inline image[0.1, 0.6]) and Reynolds number (Re image[50, 1000]). new drag correlation combining existed correlations for low-Re flows single-sphere proposed, which fits entire dataset with average relative deviation 4%. This so far best possible expression static arrays spheres, most accurate basis introduce particle mobility dynamic systems, as fluidized beds.