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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...
Autores principales: | , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9459938/ https://www.ncbi.nlm.nih.gov/pubmed/36080854 http://dx.doi.org/10.3390/s22176395 |
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author | Plotnikov, Leonid Plotnikov, Iurii Osipov, Leonid Slednev, Vladimir Shurupov, Vladislav |
author_facet | Plotnikov, Leonid Plotnikov, Iurii Osipov, Leonid Slednev, Vladimir Shurupov, Vladislav |
author_sort | Plotnikov, Leonid |
collection | PubMed |
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. |
format | Online Article Text |
id | pubmed-9459938 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-94599382022-09-10 An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in Pipelines Plotnikov, Leonid Plotnikov, Iurii Osipov, Leonid Slednev, Vladimir Shurupov, Vladislav Sensors (Basel) Article 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. MDPI 2022-08-25 /pmc/articles/PMC9459938/ /pubmed/36080854 http://dx.doi.org/10.3390/s22176395 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/). |
spellingShingle | Article Plotnikov, Leonid Plotnikov, Iurii Osipov, Leonid Slednev, Vladimir Shurupov, Vladislav An Indirect Method for Determining the Local Heat Transfer Coefficient of Gas Flows in Pipelines |
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 | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9459938/ https://www.ncbi.nlm.nih.gov/pubmed/36080854 http://dx.doi.org/10.3390/s22176395 |
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