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Characterization of fan spray atomizers through numerical simulation
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- Altimira, Mireia, 1981- (författare)
- Mech. Eng. Dept., Tecnun (Univ. of Navarra)
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- Rivas, Alejandro (författare)
- Mech. Eng. Dept., Tecnun (Univ. of Navarra)
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- Sanchez Larraona, Gorka (författare)
- Mech. Eng. Dept., Tecnun (Univ. of Navarra)
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- Mech Eng. Dept., Tecnun (Univ. of Navarra) (creator_code:org_t)
- Elsevier, 2009
- 2009
- Engelska.
- Ingår i: International Journal of Heat and Fluid Flow. - : Elsevier. - 0142-727X .- 1879-2278. ; 30:2, s. 339-355
- Tidskriftsartikel (refereegranskat)
Abstract
Ämnesord
Stäng
- The present paper focuses on the mathematical modeling of industrial fan spray atomizers. The two-phase flow taking place inside the nozzle's tip and the exterior region near the outlet of three different industrial nozzle designs has been modeled and simulated. As a result, valuable information has been obtained regarding the influence of the inner geometry on the flow and also the formation and development of the liquid sheet. Characteristic magnitudes such as the discharge coefficient and the liquid sheet thickness factor have been obtained and validated through experimental measurements. The accumulation of liquid at the border of fan-shaped liquid sheets, also known as rim, has been studied in the analyzed designs, revealing the presence of a tangential velocity component in the liquid sheet and a relationship between the incoming flow rate of the rim and the angle of the liquid sheet. The dependence of the results on turbulence modeling has also been analyzed, drawing interesting conclusions regarding their influence on the liquid sheet mean flow characteristics and on the surrounding gas. Thus, the mathematical model developed has been proved to be a useful tool for nozzle manufacturers; it provides the most important characteristic parameters of the liquid sheet formed given certain nozzle geometry and, additionally, those data necessary to carry out studies of instability, breakup and atomization of the liquid sheet.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Nyckelord
- fan spray atomizers
- volume of fluid
- multiphase flow
- liquid sheet
- atomization
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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- International Journal of Heat and Fluid Flow (Sök värdpublikationen i LIBRIS)
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