Numerical Simulation of Quartz Sand Dispersion under Shock Tube Loading

In order to study the dispersion of solid particle under the loading of shock tube, a numerical simulation of the dispersion of quartz sand with a mass of 5 g and different diameters of 2.00-3.00 mm, 0.80-1.10 mm and 0.42 mm respectively was carried out by means of DPM (dispersion phase model) of FLUENT.For the particles in the center of the quartz sand cloud during the dispersion, the average velocity and the average displacement along the loading direction were obtained.The numerical simulation results have a good agreement with the experimental results.Compared with the experimental results, the simulation result is slightly larger, probably because the dissipation energy on the sieve is ignored in the numerical simulation and the paper film of shock tube is considered to be ruptured instantaneously in the assumption.