An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in Pipelines
An indirect method and procedure for determining the local heat transfer coefficient in experimental studies on the intensity of heat transfer at a gas–surface interface is described. The article provides an overview of modern approaches and technical devices for determining the heat flux or frictio...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-08-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/17/6395 |
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| author | Leonid Plotnikov Iurii Plotnikov Leonid Osipov Vladimir Slednev Vladislav Shurupov |
| author_facet | Leonid Plotnikov Iurii Plotnikov Leonid Osipov Vladimir Slednev Vladislav Shurupov |
| author_sort | Leonid Plotnikov |
| collection | DOAJ |
| description | An indirect method and procedure for determining the local heat transfer coefficient in experimental studies on the intensity of heat transfer at a gas–surface interface is described. The article provides an overview of modern approaches and technical devices for determining the heat flux or friction stresses on surfaces in the study of thermophysical processes. The proposed method uses a constant-temperature hot-wire anemometer and a sensor with a thread sensitive element fixed on the surface of a fluoroplastic substrate. A substrate with the sensor’s sensitive element was mounted flush with the wall of the investigated pipeline. This method is based on the Kutateladze–Leontiev approach (the laws of friction and heat transfer) and the hydrodynamic analogy of heat transfer (the Reynolds analogy): this is an assumption about the unity of momentum and heat transfer in a turbulent flow, which establishes a quantitative relationship between friction stresses on the heat exchange surface and heat transfer through this surface. The article presents a method for determining the speed of the developed measuring system. An example of a successful application of the proposed method in relation to the study of thermomechanical processes in the gas exchange systems of reciprocating internal combustion engines is described. |
| first_indexed | 2024-03-10T01:16:46Z |
| format | Article |
| id | doaj.art-1c3d647e83464f709fc9712afdd7f632 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T01:16:46Z |
| publishDate | 2022-08-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-1c3d647e83464f709fc9712afdd7f6322023-11-23T14:07:45ZengMDPI AGSensors1424-82202022-08-012217639510.3390/s22176395An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in PipelinesLeonid Plotnikov0Iurii Plotnikov1Leonid Osipov2Vladimir Slednev3Vladislav Shurupov4Department of Turbines and Engines, Ural Federal University Named after the First President of Russia B.N. Yeltsin, Str. Mira, 19, 620002 Yekaterinburg, RussiaDepartment of Electric Drives and Industrial Installations Automation, Ural Federal University Named after the First President of Russia B.N. Yeltsin, Str. Mira, 19, 620002 Yekaterinburg, RussiaDepartment of Turbines and Engines, Ural Federal University Named after the First President of Russia B.N. Yeltsin, Str. Mira, 19, 620002 Yekaterinburg, RussiaDepartment of Turbines and Engines, Ural Federal University Named after the First President of Russia B.N. Yeltsin, Str. Mira, 19, 620002 Yekaterinburg, RussiaDepartment of Turbines and Engines, Ural Federal University Named after the First President of Russia B.N. Yeltsin, Str. Mira, 19, 620002 Yekaterinburg, RussiaAn indirect method and procedure for determining the local heat transfer coefficient in experimental studies on the intensity of heat transfer at a gas–surface interface is described. The article provides an overview of modern approaches and technical devices for determining the heat flux or friction stresses on surfaces in the study of thermophysical processes. The proposed method uses a constant-temperature hot-wire anemometer and a sensor with a thread sensitive element fixed on the surface of a fluoroplastic substrate. A substrate with the sensor’s sensitive element was mounted flush with the wall of the investigated pipeline. This method is based on the Kutateladze–Leontiev approach (the laws of friction and heat transfer) and the hydrodynamic analogy of heat transfer (the Reynolds analogy): this is an assumption about the unity of momentum and heat transfer in a turbulent flow, which establishes a quantitative relationship between friction stresses on the heat exchange surface and heat transfer through this surface. The article presents a method for determining the speed of the developed measuring system. An example of a successful application of the proposed method in relation to the study of thermomechanical processes in the gas exchange systems of reciprocating internal combustion engines is described.https://www.mdpi.com/1424-8220/22/17/6395heat transfer coefficientgas flowspipelinesthread sensorconstant-temperature hot-wire anemometerengine intake system |
| spellingShingle | Leonid Plotnikov Iurii Plotnikov Leonid Osipov Vladimir Slednev Vladislav Shurupov An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in Pipelines Sensors heat transfer coefficient gas flows pipelines thread sensor constant-temperature hot-wire anemometer engine intake system |
| title | An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in Pipelines |
| title_full | An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in Pipelines |
| title_fullStr | An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in Pipelines |
| title_full_unstemmed | An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in Pipelines |
| title_short | An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in Pipelines |
| title_sort | indirect method for determining the local heat transfer coefficient of gas flows in pipelines |
| topic | heat transfer coefficient gas flows pipelines thread sensor constant-temperature hot-wire anemometer engine intake system |
| url | https://www.mdpi.com/1424-8220/22/17/6395 |
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