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Particle Tracing in a Micromixer

Application ID: 12151

Micromixers can either be static or dynamic depending on the required mixing time and length scale. For static mixers, the Reynolds number has to be suitable high to induce turbulence enhanced mixing. Often micromixers operate in the laminar flow regime due to their small characteristic size. The diffusivity of a solute in the flowing fluid may also be extremely small, on the order of 10?10m2/s. This results in mixing length scales on the order of meters—clearly unacceptable for a microscale device. Static mixers try to alleviate the problem by adding mixing elements to induce vorticity into the flow. A dynamic mixer uses rotating blades to enhance the mixing process, allowing for smaller scale devices. The one big disadvantage of a dynamic mixer is that moving parts are required. This model uses the Rotating Machinery, Laminar Flow and Particle Tracing for Fluid Flow interfaces.

This application was built using the following:

CFD Module Particle Tracing 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.