Doostmohammadi, A. and Ardekani, A. M. 2014. Reorientation of elongated particles at density interfaces. Physical Review E, Vol. 90, Issue. 3,
Ji, C. Munjiza, A. Avital, E. Ma, J. and Williams, J. J. R. 2013. Direct numerical simulation of sediment entrainment in turbulent channel flow. Physics of Fluids, Vol. 25, Issue. 5, p. 056601.
Li, Gao-Jin and Ardekani, Arezoo M. 2014. Hydrodynamic interaction of microswimmers near a wall. Physical Review E, Vol. 90, Issue. 1,
Doostmohammadi, A. and Ardekani, A. M. 2015. Suspension of solid particles in a density stratified fluid. Physics of Fluids, Vol. 27, Issue. 2, p. 023302.
Doostmohammadi, A. and Ardekani, A. M. 2013. Interaction between a pair of particles settling in a stratified fluid. Physical Review E, Vol. 88, Issue. 2,
Kempe, Tobias and Fröhlich, Jochen 2012. Collision modelling for the interface-resolved simulation of spherical particles in viscous fluids. Journal of Fluid Mechanics, Vol. 709, p. 445.
Yu, Zhaosheng and Shao, Xueming 2010. Direct numerical simulation of particulate flows with a fictitious domain method. International Journal of Multiphase Flow, Vol. 36, Issue. 2, p. 127.
Mirzaii, I. and Passandideh-Fard, M. 2012. Modeling free surface flows in presence of an arbitrary moving object. International Journal of Multiphase Flow, Vol. 39, p. 216.
Liu, D. Zheng, Yonglai and Chen, Qin 2015. Grain-resolved simulation of micro-particle dynamics in shear and oscillatory flows. Computers & Fluids, Vol. 108, p. 129.
Li, G. -J. Karimi, A. and Ardekani, A. M. 2014. Effect of solid boundaries on swimming dynamics of microorganisms in a viscoelastic fluid. Rheologica Acta, Vol. 53, Issue. 12, p. 911.
Ardekani, A. M. Dabiri, S. and Rangel, R. H. 2009. Deformation of a droplet in a particulate shear flow. Physics of Fluids, Vol. 21, Issue. 9, p. 093302.
Vanella, Marcos and Balaras, Elias 2009. A moving-least-squares reconstruction for embedded-boundary formulations. Journal of Computational Physics, Vol. 228, Issue. 18, p. 6617.
Izard, Edouard Bonometti, Thomas and Lacaze, Laurent 2014. Modelling the dynamics of a sphere approaching and bouncing on a wall in a viscous fluid. Journal of Fluid Mechanics, Vol. 747, p. 422.
Ardekani, A.M. Dabiri, S. and Rangel, R.H. 2008. Collision of multi-particle and general shape objects in a viscous fluid. Journal of Computational Physics, Vol. 227, Issue. 24, p. 10094.
Doostmohammadi, A. Dabiri, S. and Ardekani, A. M. 2014. A numerical study of the dynamics of a particle settling at moderate Reynolds numbers in a linearly stratified fluid. Journal of Fluid Mechanics, Vol. 750, p. 5.
Ardekani, A. M. Rangel, R. H. and Joseph, D. D. 2008. Two spheres in a free stream of a second-order fluid. Physics of Fluids, Vol. 20, Issue. 6, p. 063101.
Yang, F.-L. 2010. A formula for the wall-amplified added mass coefficient for a solid sphere in normal approach to a wall and its application for such motion at low Reynolds number. Physics of Fluids, Vol. 22, Issue. 12, p. 123303.
Simeonov, Julian A. 2016. The unsteady hydrodynamic force during the collision of two spheres in a viscous fluid. Acta Mechanica, Vol. 227, Issue. 2, p. 565.
Vincent, Stéphane Brändle de Motta, Jorge César Sarthou, Arthur Estivalezes, Jean-Luc Simonin, Olivier and Climent, Eric 2014. A Lagrangian VOF tensorial penalty method for the DNS of resolved particle-laden flows. Journal of Computational Physics, Vol. 256, p. 582.
Münster, R. Mierka, O. and Turek, S. 2012. Finite element-fictitious boundary methods (FEM-FBM) for 3D particulate flow. International Journal for Numerical Methods in Fluids, Vol. 69, Issue. 2, p. 294.
The dynamics of particle–particle collisions and the bouncing motion of a particle colliding with a wall in a viscous fluid is numerically investigated. The dependence of the effective coefficient of restitution on the Stokes number and surface roughness is analysed. A distributed Lagrange multiplier-based computational method in a solid–fluid system is developed and an efficient method for predicting the collision between particles is presented. A comparison between this method and previous collision strategies shows that the present approach has some significant advantages over them. Comparison of the present methodology with experimental studies for the bouncing motion of a spherical particle onto a wall shows very good agreement and validates the collision model. Finally, the effect of the coefficient of restitution for a dry collision on the vortex dynamics associated with this problem is discussed.
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