LEADER 02572nam 2200409z- 450 001 9910347046503321 005 20210211 010 $a1000044723 035 $a(CKB)4920000000102051 035 $a(oapen)https://directory.doabooks.org/handle/20.500.12854/45583 035 $a(oapen)doab45583 035 $a(EXLCZ)994920000000102051 100 $a20202102d2015 |y 0 101 0 $aeng 135 $aurmn|---annan 181 $ctxt$2rdacontent 182 $cc$2rdamedia 183 $acr$2rdacarrier 200 00$aThe dynamics of finite-size settling particles 210 $cKIT Scientific Publishing$d2015 215 $a1 online resource (XIX, 238 p. p.) 225 1 $aDissertationsreihe am Institut für Hydromechanik, Karlsruher Institut für Technologie / Karlsruher Institut für Technologie (KIT), Institut für Hydromechanik 311 08$a3-7315-0307-7 330 $aThis book contributes to the fundamental understanding of the physical mechanisms that take place in pseudo turbulent particulate flows. In the present work we have considered the sedimentation of large numbers of spherical rigid particles in an initially quiescent flow field. We have performed direct numerical simulations employing an immersed boundary method for the representation of the fluid-solid interface. The results evidence that depending on the particle settling regime (i.e. Galileo number and particle-to-fluid density ratio) the particles may exhibit strong inhomogeneous spatial distribution. It is found that the particles are preferentially located in regions with downward fluid motion. The particles inside clusters experience larger settling velocities than the average. The flow in all flow cases is observed to exhibit characteristic features of pseudo-turbulence. The particle-induced flow field is further found to be highly anisotropic with dominant vertical components. The results indicate that, in the present flow configurations, the collective and mobility effects play significant role for the particle and fluid motion. 606 $aHistory of engineering and technology$2bicssc 610 $aDNS 610 $aImmersed boundary 610 $aimmersed boundary method 610 $aMultiphasenstro?mungen 610 $aPartikel-Stro?mung 610 $aSuspensionsmultiphase and particle-laden flows 615 7$aHistory of engineering and technology 700 $aDoychev$b Todor$4auth$01313306 906 $aBOOK 912 $a9910347046503321 996 $aThe dynamics of finite-size settling particles$93031262 997 $aUNINA