The Problem of Accounting for Heat Exchange between the Flow and the Flow Part Surfaces When Modeling a Viscous Flow in Low-Flow Stages of a Centrifugal Compressor
In this paper, we review the problem of accounting for heat exchange between the flow and the flow part surfaces when creating a calculation model for modeling the workflow process of low-flow stages of a centrifugal compressor using computational fluid dynamics (CFD). The objective selected for thi...
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| Format: | Article |
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MDPI AG
2020-12-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/10/24/9138 |
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| author | Sergey Kartashov Yuri Kozhukhov Vycheslav Ivanov Aleksei Danilishin Aleksey Yablokov Aleksey Aksenov Ivan Yanin Minh Hai Nguyen |
| author_facet | Sergey Kartashov Yuri Kozhukhov Vycheslav Ivanov Aleksei Danilishin Aleksey Yablokov Aleksey Aksenov Ivan Yanin Minh Hai Nguyen |
| author_sort | Sergey Kartashov |
| collection | DOAJ |
| description | In this paper, we review the problem of accounting for heat exchange between the flow and the flow part surfaces when creating a calculation model for modeling the workflow process of low-flow stages of a centrifugal compressor using computational fluid dynamics (CFD). The objective selected for this study was a low-flow intermediate type stage with the conditional flow coefficient Փ = 0.008 and the relative width at the impeller exit b<sub>2</sub>/D<sub>2</sub> = 0.0133. We show that, in the case of modeling with widespread adiabatic wall simplification, the calculated temperature in the gaps between the impeller and the stator elements is significantly overestimated. Modeling of the working process in the flow part was carried out with a coupled heat exchanger, as well as with simplified accounting for heat transfer by setting the temperatures of the walls. The gas-dynamic characteristics of the stage were compared with the experimental data, the heat transfer influence on the disks friction coefficient was estimated, and the temperature distributions in the gaps between disks and in the flow part of the stage were analyzed. It is shown that the main principle when modeling the flow in low-flow stage is to ensure correct temperature distribution in the gaps. |
| first_indexed | 2024-03-10T13:53:29Z |
| format | Article |
| id | doaj.art-70dede58b408493bab7ab0467ac46ce2 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T13:53:29Z |
| publishDate | 2020-12-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-70dede58b408493bab7ab0467ac46ce22023-11-21T01:54:30ZengMDPI AGApplied Sciences2076-34172020-12-011024913810.3390/app10249138The Problem of Accounting for Heat Exchange between the Flow and the Flow Part Surfaces When Modeling a Viscous Flow in Low-Flow Stages of a Centrifugal CompressorSergey Kartashov0Yuri Kozhukhov1Vycheslav Ivanov2Aleksei Danilishin3Aleksey Yablokov4Aleksey Aksenov5Ivan Yanin6Minh Hai Nguyen7Center for Industrial, Resource and Infrastructure Expertise and Management, Peter the Great St. Petersburg Polytechnic University, 195251 Saint-Petersburg, RussiaCenter for Industrial, Resource and Infrastructure Expertise and Management, Peter the Great St. Petersburg Polytechnic University, 195251 Saint-Petersburg, RussiaNational Technological Initiative Center of Excellence in New Manufacturing Technologies, Peter the Great St. Petersburg Polytechnic University, 195251 Saint-Petersburg, RussiaHigh School of Energy Engineering, Peter the Great St. Petersburg Polytechnic University, 195251 Saint-Petersburg, RussiaHigh School of Energy Engineering, Peter the Great St. Petersburg Polytechnic University, 195251 Saint-Petersburg, RussiaHigh School of Energy Engineering, Peter the Great St. Petersburg Polytechnic University, 195251 Saint-Petersburg, RussiaHigh School of Energy Engineering, Peter the Great St. Petersburg Polytechnic University, 195251 Saint-Petersburg, RussiaPetrovietnam Exploration Production Corporation, Ho Chi Minh City 700000, VietnamIn this paper, we review the problem of accounting for heat exchange between the flow and the flow part surfaces when creating a calculation model for modeling the workflow process of low-flow stages of a centrifugal compressor using computational fluid dynamics (CFD). The objective selected for this study was a low-flow intermediate type stage with the conditional flow coefficient Փ = 0.008 and the relative width at the impeller exit b<sub>2</sub>/D<sub>2</sub> = 0.0133. We show that, in the case of modeling with widespread adiabatic wall simplification, the calculated temperature in the gaps between the impeller and the stator elements is significantly overestimated. Modeling of the working process in the flow part was carried out with a coupled heat exchanger, as well as with simplified accounting for heat transfer by setting the temperatures of the walls. The gas-dynamic characteristics of the stage were compared with the experimental data, the heat transfer influence on the disks friction coefficient was estimated, and the temperature distributions in the gaps between disks and in the flow part of the stage were analyzed. It is shown that the main principle when modeling the flow in low-flow stage is to ensure correct temperature distribution in the gaps.https://www.mdpi.com/2076-3417/10/24/9138low-flow stagecomputational gas dynamicsconjugate heat exchangeadiabatic wallsdisc frictionlabyrinth seals |
| spellingShingle | Sergey Kartashov Yuri Kozhukhov Vycheslav Ivanov Aleksei Danilishin Aleksey Yablokov Aleksey Aksenov Ivan Yanin Minh Hai Nguyen The Problem of Accounting for Heat Exchange between the Flow and the Flow Part Surfaces When Modeling a Viscous Flow in Low-Flow Stages of a Centrifugal Compressor Applied Sciences low-flow stage computational gas dynamics conjugate heat exchange adiabatic walls disc friction labyrinth seals |
| title | The Problem of Accounting for Heat Exchange between the Flow and the Flow Part Surfaces When Modeling a Viscous Flow in Low-Flow Stages of a Centrifugal Compressor |
| title_full | The Problem of Accounting for Heat Exchange between the Flow and the Flow Part Surfaces When Modeling a Viscous Flow in Low-Flow Stages of a Centrifugal Compressor |
| title_fullStr | The Problem of Accounting for Heat Exchange between the Flow and the Flow Part Surfaces When Modeling a Viscous Flow in Low-Flow Stages of a Centrifugal Compressor |
| title_full_unstemmed | The Problem of Accounting for Heat Exchange between the Flow and the Flow Part Surfaces When Modeling a Viscous Flow in Low-Flow Stages of a Centrifugal Compressor |
| title_short | The Problem of Accounting for Heat Exchange between the Flow and the Flow Part Surfaces When Modeling a Viscous Flow in Low-Flow Stages of a Centrifugal Compressor |
| title_sort | problem of accounting for heat exchange between the flow and the flow part surfaces when modeling a viscous flow in low flow stages of a centrifugal compressor |
| topic | low-flow stage computational gas dynamics conjugate heat exchange adiabatic walls disc friction labyrinth seals |
| url | https://www.mdpi.com/2076-3417/10/24/9138 |
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