Rotordynamic evaluation of a tangential-injection hybrid bearing /
: : Issued also on microfiche from Lange Micrographics.
| Main Author: | |
|---|---|
| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1998.
|
| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | : : Issued also on microfiche from Lange Micrographics. = 1, and Cre = 0.001 . Data are presented for 550C against rotation enhances stability, yielding and a drop of effective stiffness with increasing and the cross-coupled-stiffness coefficients, and bearing recess against rotation, versus the customary bearings develop cross-coupled stiffness coefficients bearings will be replaced by hybrid bearings that combine hydrostatic and hydrodynamic effects. Hybrid due to fluid rotation, leading to predictions of onset For future high-speed cryogenic turbomachinery, ball here for a hybrid bearing with against-rotation includes angled-orifice increase injection hybrid bearing, experiments show injection injection. The bearing has a 76.4 mm diameter with L/D injection. The code correctly predicts trends, but at larger negative values. low speed, measured cross-coupled stiffness pressures out to 7.0 MPa. Compared to a radial- radial injection, can reduce the circumferential flow reductions of cross-coupled stiffness coefficients and speed adversely affect the bearing's performances. speeds of instability and potential limitations in the margin of stability. Test results are presented The prediction code developed by San Andrłs (1995) their range of application. Injecting fluid into a water at three speeds out to 25000 rpm and three whirl frequency ratios. However, increased flow rate |
|---|---|
| Item Description: | "Major subject: Mechanical Engineering". Vita. |
| Physical Description: | xi, 59 leaves : illustrations ; 28 cm. Also available online. |
| Bibliography: | Includes bibliographical references (leaves 54-55). |