Dynamic Characteristics of the Herringbone Groove Gas Journal Bearings: Numerical Simulations
Dynamic characteristics of the herringbone grooved gas journal bearings (HGGJB) under fluid-structure interactions are systematically investigated using the finite element method. Stability and bearing capacity of the HGGJB are estimated and compared with those of the plain gas journal bearings (PGJ...
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Hindawi Limited
2016-01-01
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Series: | Shock and Vibration |
Online Access: | http://dx.doi.org/10.1155/2016/8743016 |
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doaj-ced9733205c34d8ca360df89160313912020-11-24T22:52:51ZengHindawi LimitedShock and Vibration1070-96221875-92032016-01-01201610.1155/2016/87430168743016Dynamic Characteristics of the Herringbone Groove Gas Journal Bearings: Numerical SimulationsBin Wang0Yongtao Sun1Qian Ding2Department of Mechanics, Tianjin University, Tianjin 300072, ChinaDepartment of Mechanics, Tianjin University, Tianjin 300072, ChinaDepartment of Mechanics, Tianjin University, Tianjin 300072, ChinaDynamic characteristics of the herringbone grooved gas journal bearings (HGGJB) under fluid-structure interactions are systematically investigated using the finite element method. Stability and bearing capacity of the HGGJB are estimated and compared with those of the plain gas journal bearings (PGJB). Influences of the structural parameters, including the spiral angle, the groove number, the groove depth, the pressure relief hole diameter, the bearing radial clearance, the length to diameter ratio, and the rotating speed, on dynamic characteristics of HGGJB are analyzed. To verify the numerical simulation results, pressure nephograms and cross-section pressure curves of the same rotor model, calculated by the numerical simulation and the theoretical method, respectively, are compared. Similar results are obtained. Compared to the common constrained boundary conditions in the previous numerical simulations, boundary conditions adopted in this paper are complete self-absorption and the change of the gas inlet and outlet depends on the rotating state of the rotor, which are more accordant with the real dynamic characteristics of the HGGJB. In all, the results presented in this paper provide a deeper and better understanding of the dynamic characteristics of the HGGJB under fluid-structure interactions.http://dx.doi.org/10.1155/2016/8743016 |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Bin Wang Yongtao Sun Qian Ding |
spellingShingle |
Bin Wang Yongtao Sun Qian Ding Dynamic Characteristics of the Herringbone Groove Gas Journal Bearings: Numerical Simulations Shock and Vibration |
author_facet |
Bin Wang Yongtao Sun Qian Ding |
author_sort |
Bin Wang |
title |
Dynamic Characteristics of the Herringbone Groove Gas Journal Bearings: Numerical Simulations |
title_short |
Dynamic Characteristics of the Herringbone Groove Gas Journal Bearings: Numerical Simulations |
title_full |
Dynamic Characteristics of the Herringbone Groove Gas Journal Bearings: Numerical Simulations |
title_fullStr |
Dynamic Characteristics of the Herringbone Groove Gas Journal Bearings: Numerical Simulations |
title_full_unstemmed |
Dynamic Characteristics of the Herringbone Groove Gas Journal Bearings: Numerical Simulations |
title_sort |
dynamic characteristics of the herringbone groove gas journal bearings: numerical simulations |
publisher |
Hindawi Limited |
series |
Shock and Vibration |
issn |
1070-9622 1875-9203 |
publishDate |
2016-01-01 |
description |
Dynamic characteristics of the herringbone grooved gas journal bearings (HGGJB) under fluid-structure interactions are systematically investigated using the finite element method. Stability and bearing capacity of the HGGJB are estimated and compared with those of the plain gas journal bearings (PGJB). Influences of the structural parameters, including the spiral angle, the groove number, the groove depth, the pressure relief hole diameter, the bearing radial clearance, the length to diameter ratio, and the rotating speed, on dynamic characteristics of HGGJB are analyzed. To verify the numerical simulation results, pressure nephograms and cross-section pressure curves of the same rotor model, calculated by the numerical simulation and the theoretical method, respectively, are compared. Similar results are obtained. Compared to the common constrained boundary conditions in the previous numerical simulations, boundary conditions adopted in this paper are complete self-absorption and the change of the gas inlet and outlet depends on the rotating state of the rotor, which are more accordant with the real dynamic characteristics of the HGGJB. In all, the results presented in this paper provide a deeper and better understanding of the dynamic characteristics of the HGGJB under fluid-structure interactions. |
url |
http://dx.doi.org/10.1155/2016/8743016 |
work_keys_str_mv |
AT binwang dynamiccharacteristicsoftheherringbonegroovegasjournalbearingsnumericalsimulations AT yongtaosun dynamiccharacteristicsoftheherringbonegroovegasjournalbearingsnumericalsimulations AT qianding dynamiccharacteristicsoftheherringbonegroovegasjournalbearingsnumericalsimulations |
_version_ |
1725664265203875840 |