Examining the effect of geometry changes in industrial fuel injection systems on hydrodynamic structures with biglobal linear stability analysis
| Autor: | Thierry Poinsot, Thomas Kaiser, Laurent Selle, Kilian Oberleithner |
|---|---|
| Přispěvatelé: | Centre National de la Recherche Scientifique - CNRS (FRANCE), Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE), Technische Universität Berlin - TU Berlin (GERMANY), Université Toulouse III - Paul Sabatier - UT3 (FRANCE), Institut de Mécanique des Fluides de Toulouse - IMFT (Toulouse, France), Technische Universität Berlin (TU), Institut de mécanique des fluides de Toulouse (IMFT), Université Toulouse III - Paul Sabatier (UT3), Université Fédérale Toulouse Midi-Pyrénées-Université Fédérale Toulouse Midi-Pyrénées-Centre National de la Recherche Scientifique (CNRS)-Institut National Polytechnique (Toulouse) (Toulouse INP), Université Fédérale Toulouse Midi-Pyrénées |
| Jazyk: | angličtina |
| Rok vydání: | 2020 |
| Předmět: |
Materials science
Mécanique des fluides Flow (psychology) Energy Engineering and Power Technology Aerospace Engineering Geometry Context (language use) 02 engineering and technology 01 natural sciences law.invention 010305 fluids & plasmas [SPI.MECA.MEFL]Engineering Sciences [physics]/Mechanics [physics.med-ph]/Fluids mechanics [physics.class-ph] Biglobal stability analysis 0203 mechanical engineering law 0103 physical sciences Mean flow Shape optimization 010306 general physics 020301 aerospace & aeronautics Turbulence Mechanical Engineering [SPI.FLUID]Engineering Sciences [physics]/Reactive fluid environment Injector Vortex Fuel Technology Nuclear Energy and Engineering Large eddy simulation |
| Zdroj: | Journal of Engineering for Gas Turbines and Power Journal of Engineering for Gas Turbines and Power, American Society of Mechanical Engineers, 2020, 142 (1), pp.011024. ⟨10.1115/1.4045018⟩ |
| ISSN: | 0742-4795 |
| Popis: | Shape optimization with respect to the suppression or enhancement of dynamical flow structures is an important topic in combustion research and beyond. In this paper, we investigate the flow in an industrial fuel injection system by experimental means, as well as Large Eddy Simulation (LES) and Linear Stability Analysis (LSA) for two configurations of the swirler. In the first configuration, the reference geometry, a Precessing Vortex Core (PVC) occurs. In the second configuration, a center body is mounted in the interior of the injector. It is shown by both experiments and LES that the PVC is suppressed in the presence of the center body, while the mean flow remains nearly unaffected. The method of LSA is applied in order to explain the effect of the geometry change. The work shows that LSA is capable of explaining the occurrence or disappearance of coherent structures evolving on the turbulent flows if the geometry is changed. This is an important step in using LSA in the context of shape optimization of industrial fuel injectors. |
| Databáze: | OpenAIRE |
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