Numerical simulation for fluid droplet impact on discrete particles with coupled SPH-DEM method

Abstract

Purpose A new coupled model is developed to simulate the interaction between fluid droplet collisions on discrete particles (DPs) by using mathematic function. Design/methodology/approach In this model, the smoothed particle hydrodynamics (SPH) is used based on the kernel function and the time step which takes into consideration to the fluid domain in accordance with the discrete element method (DEM) with resistance function. The interaction between fluid and DPs consists of three parts, which are repulsive force, viscous shear force and attractive force caused by the capillary action. The numerical simulation of droplet collision on DPs presents the whole process of droplet motion. Otherwise, an experimental data were conducted to record the realistic process for verification. Findings The comparison result indicated that the numerical simulation is capable of capturing the entire process for droplet collision on DPs. Research limitations/implications However, based on the difference of experimental environment, type of the DP and setups, the maximum spreading dimeters of could not fit the experimental data exactly. Originality/value In sum, the coupled SPH-DEM method simulation shows that the coupled model of SPH-DEM developed an entire effectiveness process for fluid–solid interaction problem.

Numerical simulation of dissolution of solid particles in fluid flow using the SPH method

“…Within the framework of the SPH method, the simulation domain is populated by freely moving particles where physical properties are averaged over computational particles using a smoothing kernel function, and the governing equations are discretized on these particles. SPH has been applied to a wide range of applications such as free surface flows (Aly et al, 2013;Leroy et al, 2016;Gotoh et al, 2014), hydrodynamic instabilities (Rahmat et al, 2014;, multiphase flows (Rahmat et al, 2016;Hopp-Hirschler et al, 2019;Rahmat and Yildiz, 2018;Nasiri et al, 2018), bluff body simulations and fluid-solid interactions (Rafiee and Thiagarajan, 2009;Tran-Duc et al, 2017;Rahmat et al, 2019;Li et al, 2018).…”

Numerical simulation of buckling and asymmetric behavior of flexible filament using temporal second-order immersed boundary method

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