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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Main Authors: Bin Wang, Yongtao Sun, Qian Ding
Format: Article
Language:English
Published: Hindawi Limited 2016-01-01
Series:Shock and Vibration
Online Access:http://dx.doi.org/10.1155/2016/8743016
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spelling 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
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