Stray Currents from a Train in a Light Rail Transit System
Application ID: 120721
Light rail transit (LRT) systems often utilize DC power for train propulsion. In these systems the potential gradients in the rails may induce stray currents, which corrode adjacent metallic structures.
In this example, the Cathodic Protection interface, using Edge Electrode nodes, is used to model the stray currents from a moving train and the resulting corrosion of a nearby pipe. The 3D domain surrounding the railway and the pipe features different soil conductivities. The impact of changed soil conductivities and pipe position is also investigated.
This model example illustrates applications of this type that would nominally be built using the following products:
however, additional products may be required to completely define and model it. Furthermore, this example may also be defined and modeled using components from the following product combinations:
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 Specification Chart 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.