Numerical calculation of heat transfer coefficient in cooled crescent gap of self-lubricating bearing
The paper proposes methods for numerically and experimentally determining the heat transfer coefficient of a self-lubricating bearing of a turbine unit brought to the surface of a crescent channel. The method of numerical research allows you to get the criterion heat transfer equations that are...
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| Format: | Article |
| Language: | English |
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Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education
2019-11-01
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| Series: | Омский научный вестник |
| Subjects: | |
| Online Access: | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2019/5%20(167)/15-20%20%D0%A0%D0%B0%D0%B9%D0%BA%D0%BE%D0%B2%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9D.%20%D0%90.,%20%D0%97%D0%B0%D1%85%D0%B0%D1%80%D0%BE%D0%B2%20%D0%92.%20%D0%90..pdf |
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| _version_ | 1832569313152729088 |
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| author | N. A. Raykovskiy V. A. Zakharov |
| author_facet | N. A. Raykovskiy V. A. Zakharov |
| author_sort | N. A. Raykovskiy |
| collection | DOAJ |
| description | The paper proposes methods for numerically and experimentally
determining the heat transfer coefficient of a self-lubricating
bearing of a turbine unit brought to the surface of a crescent
channel. The method of numerical research allows you to get the
criterion heat transfer equations that are necessary in engineering
methods for designing self-lubricating bearing assemblies. The
results of an experimental study allow us to evaluate the adequacy
of the proposed numerical method. The discrepancy between the
values of heat transfer coefficients obtained by a numerical method
using the thermal energy model and as a result of experimental
studies on average does not exceed 7%. A significant effect of
the mass flow rate of the cooling medium on the heat transfer
coefficient is revealed. The values of the heat transfer coefficient
in the range of studies ranged from 12 to 85 W/m2K. |
| format | Article |
| id | doaj-art-278c23f8657e4e16ba43d1704282bf71 |
| institution | Kabale University |
| issn | 1813-8225 2541-7541 |
| language | English |
| publishDate | 2019-11-01 |
| publisher | Omsk State Technical University, Federal State Autonoumos Educational Institution of Higher Education |
| record_format | Article |
| series | Омский научный вестник |
| spelling | doaj-art-278c23f8657e4e16ba43d1704282bf712025-02-02T22:04:02ZengOmsk State Technical University, Federal State Autonoumos Educational Institution of Higher EducationОмский научный вестник1813-82252541-75412019-11-015 (167)152010.25206/1813-8225-2019-167-15-20Numerical calculation of heat transfer coefficient in cooled crescent gap of self-lubricating bearingN. A. Raykovskiy0V. A. Zakharov1https://orcid.org/0000-0001-9936-3845Omsk State Technical UniversityONHPThe paper proposes methods for numerically and experimentally determining the heat transfer coefficient of a self-lubricating bearing of a turbine unit brought to the surface of a crescent channel. The method of numerical research allows you to get the criterion heat transfer equations that are necessary in engineering methods for designing self-lubricating bearing assemblies. The results of an experimental study allow us to evaluate the adequacy of the proposed numerical method. The discrepancy between the values of heat transfer coefficients obtained by a numerical method using the thermal energy model and as a result of experimental studies on average does not exceed 7%. A significant effect of the mass flow rate of the cooling medium on the heat transfer coefficient is revealed. The values of the heat transfer coefficient in the range of studies ranged from 12 to 85 W/m2K.https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2019/5%20(167)/15-20%20%D0%A0%D0%B0%D0%B9%D0%BA%D0%BE%D0%B2%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9D.%20%D0%90.,%20%D0%97%D0%B0%D1%85%D0%B0%D1%80%D0%BE%D0%B2%20%D0%92.%20%D0%90..pdfnumerical methodheat transfer coefficientphysical experimentself-lubricating bearingcooling systemcrescent gaptemperature field |
| spellingShingle | N. A. Raykovskiy V. A. Zakharov Numerical calculation of heat transfer coefficient in cooled crescent gap of self-lubricating bearing Омский научный вестник numerical method heat transfer coefficient physical experiment self-lubricating bearing cooling system crescent gap temperature field |
| title | Numerical calculation of heat transfer coefficient in cooled crescent gap of self-lubricating bearing |
| title_full | Numerical calculation of heat transfer coefficient in cooled crescent gap of self-lubricating bearing |
| title_fullStr | Numerical calculation of heat transfer coefficient in cooled crescent gap of self-lubricating bearing |
| title_full_unstemmed | Numerical calculation of heat transfer coefficient in cooled crescent gap of self-lubricating bearing |
| title_short | Numerical calculation of heat transfer coefficient in cooled crescent gap of self-lubricating bearing |
| title_sort | numerical calculation of heat transfer coefficient in cooled crescent gap of self lubricating bearing |
| topic | numerical method heat transfer coefficient physical experiment self-lubricating bearing cooling system crescent gap temperature field |
| url | https://www.omgtu.ru/general_information/media_omgtu/journal_of_omsk_research_journal/files/arhiv/2019/5%20(167)/15-20%20%D0%A0%D0%B0%D0%B9%D0%BA%D0%BE%D0%B2%D1%81%D0%BA%D0%B8%D0%B9%20%D0%9D.%20%D0%90.,%20%D0%97%D0%B0%D1%85%D0%B0%D1%80%D0%BE%D0%B2%20%D0%92.%20%D0%90..pdf |
| work_keys_str_mv | AT naraykovskiy numericalcalculationofheattransfercoefficientincooledcrescentgapofselflubricatingbearing AT vazakharov numericalcalculationofheattransfercoefficientincooledcrescentgapofselflubricatingbearing |