1 / 13

Analysis of Various Parameters Associated with Oil Lubricated Journal Bearings

Analysis of Various Parameters Associated with Oil Lubricated Journal Bearings. By: Paul Wolfinger. Background.

fleur-glass
Télécharger la présentation

Analysis of Various Parameters Associated with Oil Lubricated Journal Bearings

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Analysis of Various Parameters Associated with Oil Lubricated Journal Bearings By: Paul Wolfinger

  2. Background • In marine bearing lubrication, the rotating shaft inside the bearing is in the presence of oil, which generates a wedge between the two due to the dynamics of the fluid. The fluid generally adheres to each body and must shear in order to accommodate the relative motion. • Fluid film thickness between the bearing surface and rotor provides lubrication, of which one can determine a velocity and temperature profile.

  3. Project Purpose • This project evaluates full journal bearings, which completely surround the shaft journal to show relationships between diameter and RPM. • Four full journal bearing types are evaluated in COMSOL at four different conditions to trade-off bearing stability and capability to handle load: • Plain journal • Elliptical journal • Pressure dam journal • Offset/lobe journal

  4. Validation of COMSOL • Reynolds equation with Sommerfeld solultion used to validate COMSOL • Petroff’s Equation to compare cases

  5. Validation of COMSOL

  6. Bearing Types • Plain • Elliptical • Pressure Dam • Offset/lobe

  7. Conditions for Evaluation of Each Bearing in COMSOL

  8. Plain Journal Bearing Results

  9. Elliptical Bearing Results

  10. Pressure Dam Bearing Results

  11. Offset/Lobe Bearing Results

  12. Summary of Case A and B Case A Case B

  13. Summary of Case C and D Case C Case D

More Related