Effects of vortex flow on the tiny particle transportation behavior in a swirling instrument

• A small particle reaction with the surrounding flow at the forced vortex situation • The different distribution for the particle speed in a rotatory flow domain • A meshless Collocation method for analyzing the two phase flow field • The impact of the forced vortex phenomenon on the particle movement This work examines the effect of the forced vortex phenomenon on particle transportation in a rotational flow field. The nonlinear governing equations of motion are solved analytically by a Collocation method. The results are in reasonable agreement with existing studies. Furthermore, changing the initial angular velocity of the fluid or the primary radius of the particle reveals a decreasing pattern in the particle location but an increasing pattern in the radial speed as the initial angular velocity increases. In addition, enlarging the primary particle sizes leads to particle location and tangential speed reduction.