A new three-control-volume theory for circumferentially-grooved liquid seals /
analysis using a partition of the seal into three control
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1994.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | analysis using a partition of the seal into three control cavity, and account for the penetration of main flow circumferentially-grooved liquid seals, through a Circumferentially-grooved seals are used in centrifugal pumps coefficients are slightly underpredicted, whereas direct damping coefficient is undetpredicted within 40%. Leakage equations. We assume a single-vortex flow pattern in seal expected trend. Direct and cross-coupled stiffness flow predictions are very good. from Kilgore (1988), lwatsubo (1990), and Florjancic (1990). modification in the seal parameters always induces evolution of the rotordynamic coefficients according to the right perturbation analysis of the pressure and velocity governing streamlines inside cavities and a first order flow leaving the main flow. Validation of the new analysis is achieved Theoretical results are fair and consistent, i.e., a This thesis presents a new theory based on Florjancic's work through a comparison with existing experimental data taken to predict leakage flow and rotordynamic coefficients for to reduce leakage flow. Florjancic (1990) developed an volumes, bulk-flow theory and Hirs' lubrication equations. |
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| Item Description: | "Major subject: Mechanical Engineering". Vita. |
| Physical Description: | xi, 84 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references. |