Abstract
The surface roughness of sealing face has effects on the characteristics of mechanical seals. An average flow model has been applied to the lubrication problems considering those effects. However, that model is limited to a type of normally-distributed surface roughness despite of a number of lapped surfaces which have non-normal distribution. Therefore, this study focuses on the skewness of surface roughness and investigates the effects of that on the correction factors in the average flow model. As a result, the smallest pressure flow factors were obtained under negative skewness. The pressure flow factor has effects on the leakage rate of mechanical seals, so that the surface roughness has negative skewness results in small leakage.
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