Thermal Stress in a Rotor due to Bearing Heat Loss
Application ID: 90251
Hydrodynamic bearings generate heat due to the viscous losses in the lubricant. As a result, the temperature of the rotor increases causing deformation and thermal stresses in both the rotor and the bearing housing.
This example shows how to model different physical phenomena that are involved in the heat transfer in a rotor bearing system and how they affect each other.
The results include pressure distribution and viscous heat loss in the bearing; temperature profile in the lubricant film, rotor, and bearing housing; and stress and deformation in the rotor and the bearing housing.
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:
- COMSOL Multiphysics® and
- Heat Transfer Module and
- Rotordynamics Module and
- Structural Mechanics 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 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.