A Solution Using the Superposition Technique for Externally Pressurized Multi-Recess Journal Bearings Including Hydrodynamic Effects

The paper presents details of a computer solution to the problem of a rotating multi-recess externally pressurized bearing. It is shown that the bearing number Nη/P8(cD/D)2correlates the results and permits the superposition of hydrodynamic and hydrostatic results for a given geometry. This significantly reduces the computer time necessary for a complete survey of results since only one solution for each of the Laplace equations and the Reynolds equation is required at any eccentricity. The problem of the control circuit is solved separately and is negligible in computer time taken in comparison with the main subroutines of the programme for finding the hydrodynamic and hydrostatic coefficients.