Influence of Holes Manufacture Technology on Perforated Plate Aerodynamics

Transpiration flow is a very important and still open subject in many technical applications. Perforated walls are useful for the purpose of “flow control”, as well as for the cooling of walls and blades (effusive cooling) in gas turbines. We are still not able to include large numbers of holes in t...

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Autores principales:	Joanna Grzelak, Ryszard Szwaba
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	perforated plates laser micromachining holes manufacture flow direction Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
Acceso en línea:	https://doaj.org/article/e9ef65cf9d7a4f17ade15a287c5bf138
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spelling	oai:doaj.org-article:e9ef65cf9d7a4f17ade15a287c5bf1382021-11-11T18:09:31ZInfluence of Holes Manufacture Technology on Perforated Plate Aerodynamics10.3390/ma142166241996-1944https://doaj.org/article/e9ef65cf9d7a4f17ade15a287c5bf1382021-11-01T00:00:00Zhttps://www.mdpi.com/1996-1944/14/21/6624https://doaj.org/toc/1996-1944Transpiration flow is a very important and still open subject in many technical applications. Perforated walls are useful for the purpose of “flow control”, as well as for the cooling of walls and blades (effusive cooling) in gas turbines. We are still not able to include large numbers of holes in the numerical calculations and therefore we need physical models. Problems are related also to the quality of the holes in perforated plates. The present transpiration analysis concerns with experimental investigations of the air flow through perforated plates with microholes of 125 and 300 µm diameters. A good accordance of the results with other experiments, simulations and theory was obtained. The received results very clearly show that technology manufacturing of plate holes influences on their aerodynamic characteristics. It turned out that the quality of the plate microholes using laser technology and, consequently, the shape of the hole, can affect the flow losses. Therefore, this effect was investigated and the flow characteristics in both directions were measured, i.e., for two plate settings.Joanna GrzelakRyszard SzwabaMDPI AGarticleperforated plateslaser micromachiningholes manufactureflow directionTechnologyTElectrical engineering. Electronics. Nuclear engineeringTK1-9971Engineering (General). Civil engineering (General)TA1-2040MicroscopyQH201-278.5Descriptive and experimental mechanicsQC120-168.85ENMaterials, Vol 14, Iss 6624, p 6624 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	perforated plates laser micromachining holes manufacture flow direction Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85
spellingShingle	perforated plates laser micromachining holes manufacture flow direction Technology T Electrical engineering. Electronics. Nuclear engineering TK1-9971 Engineering (General). Civil engineering (General) TA1-2040 Microscopy QH201-278.5 Descriptive and experimental mechanics QC120-168.85 Joanna Grzelak Ryszard Szwaba Influence of Holes Manufacture Technology on Perforated Plate Aerodynamics
description	Transpiration flow is a very important and still open subject in many technical applications. Perforated walls are useful for the purpose of “flow control”, as well as for the cooling of walls and blades (effusive cooling) in gas turbines. We are still not able to include large numbers of holes in the numerical calculations and therefore we need physical models. Problems are related also to the quality of the holes in perforated plates. The present transpiration analysis concerns with experimental investigations of the air flow through perforated plates with microholes of 125 and 300 µm diameters. A good accordance of the results with other experiments, simulations and theory was obtained. The received results very clearly show that technology manufacturing of plate holes influences on their aerodynamic characteristics. It turned out that the quality of the plate microholes using laser technology and, consequently, the shape of the hole, can affect the flow losses. Therefore, this effect was investigated and the flow characteristics in both directions were measured, i.e., for two plate settings.
format	article
author	Joanna Grzelak Ryszard Szwaba
author_facet	Joanna Grzelak Ryszard Szwaba
author_sort	Joanna Grzelak
title	Influence of Holes Manufacture Technology on Perforated Plate Aerodynamics
title_short	Influence of Holes Manufacture Technology on Perforated Plate Aerodynamics
title_full	Influence of Holes Manufacture Technology on Perforated Plate Aerodynamics
title_fullStr	Influence of Holes Manufacture Technology on Perforated Plate Aerodynamics
title_full_unstemmed	Influence of Holes Manufacture Technology on Perforated Plate Aerodynamics
title_sort	influence of holes manufacture technology on perforated plate aerodynamics
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/e9ef65cf9d7a4f17ade15a287c5bf138
work_keys_str_mv	AT joannagrzelak influenceofholesmanufacturetechnologyonperforatedplateaerodynamics AT ryszardszwaba influenceofholesmanufacturetechnologyonperforatedplateaerodynamics
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Influence of Holes Manufacture Technology on Perforated Plate Aerodynamics

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