Effect of internal mass in the lattice Boltzmann simulation of moving solid bodies by the smoothed-profile method

Physical Review. E
Yasushi MinoHideto Matsuyama

Abstract

A computational method for the simulation of particulate flows that can efficiently treat the particle-fluid boundary in systems containing many particles was developed based on the smoothed-profile lattice Boltzmann method (SPLBM). In our proposed method, which we call the improved SPLBM (iSPLBM), for an accurate and stable simulation of particulate flows, the hydrodynamic force on a moving solid particle is exactly formulated with consideration of the effect of internal fluid mass. To validate the accuracy and stability of iSPLBM, we conducted numerical simulations of several particulate flow systems and compared our results with those of other simulations and some experiments. In addition, we performed simulations on flotation of many lightweight particles with a wide range of particle size distribution, the results of which demonstrated the effectiveness of iSPLBM. Our proposed model is a promising method to accurately and stably simulate extensive particulate flows.

References

Oct 4, 2000·Physical Review Letters·R Verberg, A J Ladd
May 21, 2005·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Yasuya Nakayama, Ryoichi Yamamoto
Mar 17, 2011·Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics·Saeed JafariMohamad Rahnama

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