Introduction

Mixing tanks are used to maintain solid particles or droplets of heavy fluids in suspension. Mixing may be required to enhance reaction during chemical processing or to prevent sedimentation. In this tutorial, you will use the Eulerian multiphase model to solve the particle suspension problem. The Eulerian multiphase model solves momentum equations for each of the phases, which are allowed to mix in any proportion.

This tutorial demonstrates how to do the following:

• Use the granular Eulerian multiphase model.

• Specify fixed velocities with a user-defined function (UDF) to simulate an impeller.

• Set boundary conditions for internal flow.

• Calculate a solution using the pressure-based solver.

• Solve a time-accurate transient problem.