Abstract
Finite Difference Method (FDM) is one of the most commonly used methods for calculating the pressure distribution of journal bearings, and the division of grid is the key node in computing. For the bearings with surface texture, considering the great difference between the size of texture and bearing, sparser grid may cause the larger calculation errors, but denser grid cause the increasing of computing time and great inconvenient for multi data contrast. In this paper, time consuming in calculating oil-film-pressure distribution has been compared, between using inhomogeneous or homogeneous grid in FDM, with the condition of surface texture on radial journal bearing. Calculation accuracy has also been compared. The result shows the grate shorten by using the inhomogeneous grid in calculation time, with the same accuracy of results in case of small rate of texture area.
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