Discrete Phase Flow Trap (Trapper) by Gravity CFD Simulation, ANSYS Fluent Tutorial

Description

In this project, an attempt has been made to simulate and analyze the flow of a particle trapping mechanism called the discrete phase trap (TRAPPER) by ANSYS Fluent software. We perform this CFD project and investigate it by CFD analysis.

We deal with discrete Phase flows in various mechanical and engineering systems and their application is increasing. Therefore, in order to have more efficient systems, we must have a complete understanding of such flows.

Multi-phase flows were classified into different groups, one of which is dispersed multiphase flows, which are very common in engineering systems. dispersed multi-phase flows include bubble flow, droplet flow, and particle flow.

In such a flow, one phase is considered the carrier phase, in which particles, bubbles and droplets are dispersed and form other phases. CFD simulation plays a prominent role in optimizing the design of distributed multi-phase flow systems.

The flow containing continuous and dispersed phases enters the computational domain with a speed of 5m/s.

The geometry of this model is designed in the ANSYS design modeler and meshed in ANSYS meshing software. The mesh type used for this geometry is unstructured and the element number is 420485.

Trap Methodology

particle trapping mechanism called the discrete phase trap (TRAPPER) by ANSYS Fluent software.

In order to simulate the particles, the discrete phase model is activated and Saffman lift force and pressure gradient forces are also applied to particles.

Also, since the trapping mechanism mainly works with gravity, gravity has been taken into account.

Trap Conclusion

The contours of, pressure, velocity, particle tracks, etc. are presented. The results show that 45.26% of the particles are trapped. Fluid flow is affected by the particles, and velocities are increased in areas where the particles are denser.