The acoustic performance of a textured journal bearing is studied based on computation fluid dynamic (CFD) theory and acoustic equation involved. First, a micro-grooved journal bearing is modeled through commercial software ANSYS. Then, the acoustic power levels for the journal bearing at different depths, widths, and positions of the dimples are solved through the CFD method. The numerical results show that the existence of dimples can lower the acoustic power level of the bearing. Moreover, this reduction depends on the dimple sizes and position. The dimples showing good tribological behaviors can yield severe noise.
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