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Abstract
The squeezing process of a porous faced annular disk rotating against a grooved counterpart is simulated and a squeeze film equation is obtained considering permeability and grooving effects. The governing equations, derived for isothermal fluid film and no slip boundary condition at the permeable boundary, are solved numerically. Film thickness, viscous torque, squeeze time and viscous energy dissipation are calculated and analyzed for various values of permeability, facing thickness, groove geometry, orientation, applied load and speed. It has been shown that the angular orientation significantly affects the squeezing process. High values of permeability and applied load reduce the influence of orientation. For any permeability and groove geometry, the squeeze time as well as the energy dissipation is minimum for grooves with angular orientation in the range of 30° ∼ 60°.
Presented at the 55th Annual Meeting Nashville, Tennessee May 7–11, 2000
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Presented at the 55th Annual Meeting Nashville, Tennessee May 7–11, 2000
