Transient Elastohydrodynamic Squeeze-Film Interaction
Application ID: 14109
This benchmark model computes the transient pressure distribution and film height in a squeeze film bearing for lubrication in a nonconformal conjunction of a solid sphere and an elastic wall separated by a lubricant film.
This model solves the benchmark case of hydrodynamic interaction between a solid sphere and a wall separated by a lubricant film, and extends the benchmark case to include elastic deformation and stresses on the contacting wall. The model set up involves a solid sphere being pushed by an external force towards a solid plane wall. The lubricant layer gets squeezed by the approaching ball and leads to rise in pressure in the lubricant. The calculated maximum lubricant pressure and change in film height with time are compared with analytical solutions.
This model example illustrates applications of this type that would nominally be built using the following products:CFD Module
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
- either the CFD Module, or MEMS Module and
- either the Acoustics Module, MEMS Module, or 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.