Internal flow characteristics in scaled pressure-swirl atomizer
Pressure-swirl atomizers are used in a wide range of industrial applications, e.g.: combustion, cooling, painting, food processing etc. Their spray characteristics are closely linked to the internal flow which predetermines the parameters of the liquid sheet formed at the discharge orifice. To achie...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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EDP Sciences
2018-01-01
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| Series: | EPJ Web of Conferences |
| Online Access: | https://doi.org/10.1051/epjconf/201818002059 |
| _version_ | 1818912467821002752 |
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| author | Malý Milan Sapík Marcel Jedelský Jan Janáčková Lada Jícha Miroslav Sláma Jaroslav Wigley Graham |
| author_facet | Malý Milan Sapík Marcel Jedelský Jan Janáčková Lada Jícha Miroslav Sláma Jaroslav Wigley Graham |
| author_sort | Malý Milan |
| collection | DOAJ |
| description | Pressure-swirl atomizers are used in a wide range of industrial applications, e.g.: combustion, cooling, painting, food processing etc. Their spray characteristics are closely linked to the internal flow which predetermines the parameters of the liquid sheet formed at the discharge orifice. To achieve a better understanding of the spray formation process, the internal flow was characterised using Laser Doppler Anemometry (LDA) and high-speed imaging in a transparent model made of cast PMMA (Poly(methyl methacrylate)). The design of the transparent atomizer was derived from a pressure-swirl atomizer as used in a small gas turbine. Due to the small dimensions, it was manufactured in a scale of 10:1. It has modular concept and consists of three parts which were ground, polished and bolted together. The original kerosene-type jet A-1 fuel had to be replaced due to the necessity of a refractive index match. The new working liquid should also be colourless, non-aggressive to the PMMA and have the appropriate viscosity to achieve the same Reynolds number as in the original atomizer. Several liquids were chosen and tested to satisfy these requirements. P-Cymene was chosen as the suitable working liquid. The internal flow characteristics were consequently examined by LDA and high-speed camera using p-Cymene and Kerosene-type jet A-1 in comparative manner. |
| first_indexed | 2024-12-19T23:15:04Z |
| format | Article |
| id | doaj.art-7c401822b08748b88145af9d4ca31b3a |
| institution | Directory Open Access Journal |
| issn | 2100-014X |
| language | English |
| last_indexed | 2024-12-19T23:15:04Z |
| publishDate | 2018-01-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | EPJ Web of Conferences |
| spelling | doaj.art-7c401822b08748b88145af9d4ca31b3a2022-12-21T20:02:08ZengEDP SciencesEPJ Web of Conferences2100-014X2018-01-011800205910.1051/epjconf/201818002059epjconf_efm2018_02059Internal flow characteristics in scaled pressure-swirl atomizerMalý MilanSapík MarcelJedelský JanJanáčková LadaJícha MiroslavSláma JaroslavWigley GrahamPressure-swirl atomizers are used in a wide range of industrial applications, e.g.: combustion, cooling, painting, food processing etc. Their spray characteristics are closely linked to the internal flow which predetermines the parameters of the liquid sheet formed at the discharge orifice. To achieve a better understanding of the spray formation process, the internal flow was characterised using Laser Doppler Anemometry (LDA) and high-speed imaging in a transparent model made of cast PMMA (Poly(methyl methacrylate)). The design of the transparent atomizer was derived from a pressure-swirl atomizer as used in a small gas turbine. Due to the small dimensions, it was manufactured in a scale of 10:1. It has modular concept and consists of three parts which were ground, polished and bolted together. The original kerosene-type jet A-1 fuel had to be replaced due to the necessity of a refractive index match. The new working liquid should also be colourless, non-aggressive to the PMMA and have the appropriate viscosity to achieve the same Reynolds number as in the original atomizer. Several liquids were chosen and tested to satisfy these requirements. P-Cymene was chosen as the suitable working liquid. The internal flow characteristics were consequently examined by LDA and high-speed camera using p-Cymene and Kerosene-type jet A-1 in comparative manner.https://doi.org/10.1051/epjconf/201818002059 |
| spellingShingle | Malý Milan Sapík Marcel Jedelský Jan Janáčková Lada Jícha Miroslav Sláma Jaroslav Wigley Graham Internal flow characteristics in scaled pressure-swirl atomizer EPJ Web of Conferences |
| title | Internal flow characteristics in scaled pressure-swirl atomizer |
| title_full | Internal flow characteristics in scaled pressure-swirl atomizer |
| title_fullStr | Internal flow characteristics in scaled pressure-swirl atomizer |
| title_full_unstemmed | Internal flow characteristics in scaled pressure-swirl atomizer |
| title_short | Internal flow characteristics in scaled pressure-swirl atomizer |
| title_sort | internal flow characteristics in scaled pressure swirl atomizer |
| url | https://doi.org/10.1051/epjconf/201818002059 |
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