Comparison of Different Hydrodynamic Bearings
Application ID: 43531
This example demonstrates how modeling can be used to investigate the performance of different hydrodynamic journal bearings. The model uses the Hydrodynamic Bearing interface, which solves the Reynolds equation to compute the pressure developed in a thin fluid film for four bearing types: cylindrical, elliptical, split-halves, and multilobe.
Results include fluid pressure distributions, plots of journal eccentricity versus load, the equilibrium positions of the journals, and fluid film thickness profiles for journals concentric with their bearings. Fluid pressure and velocity distributions are also plotted on unwrapped bearing surfaces.
The tutorial compares the equilibrium journal positions and fluid film thickness profiles of the four bearing types. These comparisons help identify the most suitable bearing for the operating conditions considered.
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 Tabella delle Funzionalità 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.
