Towards Numerical Simulation Tool of Motion Solid Particles in Fluid Flow

We present here a numerical method to compute the motion of rigid particles in fluid flow with a non-elastic impact law. Many methods have been proposed recently and different strategies have been used to compute such flows. Our motivation is the handling of the non-overlapping constraint in fluid-particle direct simulations. Each particle is treated individually and the Navier-Stokes equations are solved for the moving fluid by Fluent code which is based on the Finite Volume Method. The contacthandling algorithm, which is implemented in a research C++, is based on the projection of the velocity field of the rigid particles over the velocity field of the fluid flow. The method consists of imposing a constraint on the velocity field of the particles, as a guarantee that at each time step the calculated particle velocity field belongs to an eligible velocity field of the fluid. In this case study, an Uzawa algorithm has been applied.

Automated summary

The numerical method presented here is aimed at computing the motion of rigid particles in fluid flow with a non-elastic impact law. The contact handling algorithm is based on projecting the velocity field of the rigid particles over the velocity field of the fluid flow. An Uzawa algorithm has been applied in this case study.