In this paper a workflow combining CFD and DEM (discrete element method) is shown with the target to follow particle evolution around the brake system in test bench environment. Altair Engineering is a company specialized in numerical solutions, high-performance computing and data analytics. Companies specialized in numerical solutions are also challenged to identify which method would be the most suitable to study the trajectory evolution of these particles after their emission. The proposed numerical solution will bring an improvement to the standard legislation (test bench) by making it possible to understand the behavior of the particles around the brake system as the standard provides only measuring the quantity of particles emitted and measures relative far from the brake system.