A fast computation technique for the direct numerical simulation of rigid particulate flows

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An improved immersed boundary method with direct forcing for the simulation of particle laden flows (2012, methodology): “Other computations of this case where performed in [32].”
A second-order accurate immersed boundary method for fully resolved simulations of particle-laden flows (2012, background): “[8] and Sharma and Patankar [28], among others.”
Drag law for monodisperse gas–solid systems using particle-resolved direct numerical simulation of flow past fixed assemblies of spheres (2011, methodology): “The fictitious domain method with Lagrange multipliers has been developed to solve flow past many moving particles by several research groups (Patankar et al., 2000; Glowinski et al., 2001; Sharma and Patankar, 2005; Apte et al., 2009).”