Cryogenic fluid damper seals operating close to the liquid-vapor region (near the critical point or slightly sub-cooled) are likely to develop a two-phase flow region which affects the seal performance and reliability. An all-liquid, liquid-vapor, and all-vapor, i.e., a “continuous vaporization” bulk flow model is presented for prediction of the seal dynamic forced response. Continuity, momentum, and energy (enthalpy) transport equations govern the two-phase flow of a homogeneous saturated mixture in thermodynamic equilibrium. Static and dynamic force performance characteristics for the seal are obtained from a perturbation analysis of the governing equations. Theoretical predictions and comparisons to experimental measurements in a liquid and gaseous nitrogen seal are presented in Part II. The effects of two-phase flow regimes on the dynamic force coefficients and stability of an oxygen damper seal are also discussed.
Issue Section:
Research Papers
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.2.
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3.
Arauz, G., and San Andres, L., 1998, “Analysis of Two-Phase Flow in Cryogenic Damper Seals. Part II: Model Validation and Predictions,” ASME JOURNAL OF TRIBOLOGY, published in this issue pp. 228–233.
4.
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7.
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9.
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10.
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13.
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14.
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15.
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16.
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18.
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19.
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25.
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.26.
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Hughes
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.28.
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,” ASLE Transactions
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.
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