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Two-Phase Flow Modeling of a Dense Suspension

Application ID: 2161

Liquid-solid mixtures (suspensions) are important in a variety of industrial fields, such as oil and gas refinement, paper manufacturing, food processing, slurry transport, and wastewater treatment. Several different modeling approaches have been developed by the CFD community, ranging from discrete, particle-based methods to macroscopic, semi-empirical two-phase descriptions.

This model illustrates how to set up a macroscopic two-phase flow model in COMSOL Multiphysics using the Mixture Model interface. The model accounts for not only buoyancy effects but also shear-induced migration; that is, the tendency of particles to migrate toward regions of lower shear rate.

The model simulates the flow of a dense suspension consisting of light, solid particles in a liquid placed between two concentric cylinders.

This application was built using the following:

CFD Module

The combination of COMSOL® products required to model your application depends on the physics interfaces that define it. Particular physics interfaces may be common to several products (see the Specification Chart for more details). To determine the right combination of products for your project, you should evaluate all of your needs in light of each product's capabilities, consultation with the COMSOL Sales and Support teams, and the use of an evaluation license.