Coaxial Pipe
Application ID: 20361
Coaxial pipes are used in a variety of applications, including geothermal borehole heat exchangers. In this model, cold water is injected through the inner pipe and returns through the annular region between the inner and outer pipes, absorbing heat from the surrounding subsurface. The coaxial pipe is represented using a 1D edge embedded in a 3D model of the ground. Heat transfer is accounted for between the two flow channels and between the outer pipe and the surrounding subsurface. The model demonstrates how to set up a coaxial pipe configuration using the Pipe Flow Module and evaluate the fluid temperature variation with depth.
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.
