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Brownian Motion

Application ID: 12333

Transport which is purely diffusive in nature can be modeled using a Brownian force. This model shows how to add such a force in the Particle Tracing for Fluid Flow physics interface. Particle diffusion in a fluid is modeled with the diffusion equation and the Particle Tracing for Fluid flow interfaces and the results are compared.

This model is included as an example in the following products:

Particle Tracing Module

The combination of COMSOL® products required to model your application depends on several factors and may include boundary conditions, material properties, physics interfaces, and part libraries. Particular functionality may be common to several products. To determine the right combination of products for your modeling needs, review the Descrição dos Produtos and make use of a free evaluation license. The COMSOL Sales and Support teams are available for answering any questions you may have regarding this.