publication . Conference object . Part of book or chapter of book . Article . 2017

Internal flow and air core dynamics in simplex and spill-return pressure-swirl atomizers

Milan Maly; Jan Jedelsky; Jaroslav Slama; Lada Janackova; Marcel Sapik; Graham Wigley; Miroslav Jicha;
Open Access
  • Published: 28 Jul 2017
  • Publisher: Universitat Politècnica València
  • Country: Spain
Abstract
[EN] It is well known that the spray characteristics of pressure-swirl atomizers are strongly linked to the internal flow and that an unstable air core may cause instabilities in the spray. In this paper, a 10:1 scale transparent Plexiglas (PMMA) model of a pressure-swirl atomizer as used in a small gas turbine is introduced. The internal flow was examined using high-speed imaging, laser-Doppler anemometry and computational fluid dynamics tools. The experimental and numerical results were analysed and compared in terms of the air core morphology and its temporal stability. Two different liquids were used, Kerosene-type Jet A-1 represented a commonly used fuel wh...
Subjects
free text keywords: Internal flow dynamics, Pressure-swirl, Transparent nozzle, CFD, Finance, business.industry, business, Engineering, Czech, language.human_language, language, Christian ministry, Sustainability, Internal flow, Air core, Mechanical Engineering, Condensed Matter Physics, Fluid Flow and Transfer Processes, Volumetric flow rate, Reynolds number, symbols.namesake, symbols, Discharge coefficient, Physics, Mechanics, Body orifice, Froude number, Spray characteristics, Thermodynamics, Flow (psychology)
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publication . Conference object . Part of book or chapter of book . Article . 2017

Internal flow and air core dynamics in simplex and spill-return pressure-swirl atomizers

Milan Maly; Jan Jedelsky; Jaroslav Slama; Lada Janackova; Marcel Sapik; Graham Wigley; Miroslav Jicha;