Parametric Study of Spiral Groove Gas Face Seals |
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Authors: | Nicole Zirkelback |
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Affiliation: | Georgia Institute of Technology, George W. Woodruff School of Mechanical Engineering , Atlanta, Georgia, 30332-0405 |
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Abstract: | A finite element analysis for the isothermal flow in spiral groove gas face seals is detailed along with a successive approximation method for the iterative solution of the nonlinear Reynolds equation. Zeroth- and first-order pressure fields are calculated for evaluation of the seal opening force and leakage and the axial stiffness and damping force coefficients, respectively. A parametric study shows the static and dynamic force behavior of a baseline SGFS operating with a large pressure ratio. The recommended geometric parameters presented ensure large static stiffness and damping force coefficients while still allowing for low seal leakage rates. A reduction in the power loss and a significant increase in the seal static stiffness coefficient are unique features of thin seal dams. |
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Keywords: | Dry Gas Seals Face Seals Gas Lubrication Hydrodynamic Lubrication |
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