A numerical investigation of three-dimensional falling liquid films
| Autor: | Lyes Kahouadji, Assen Batchvarov, Idris T. Adebayo, Zachary Jenkins, Seungwon Shin, Jalel Chergui, Damir Juric, Omar K. Matar |
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| Přispěvatelé: | Matar, Omar K [0000-0002-0530-8317], Apollo - University of Cambridge Repository, Imperial College London, Hongik University, Laboratoire Interdisciplinaire des Sciences du Numérique (LISN), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), COuplages Multiphysiques Et Transferts (COMET), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Mécanique-Energétique (M.-E.), Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS)-Institut National de Recherche en Informatique et en Automatique (Inria)-CentraleSupélec-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Engineering & Physical Science Research Council (EPSRC), Petronas Research Sdn. Bhd. |
| Rok vydání: | 2022 |
| Předmět: |
DYNAMICS
Technology FLOW Environmental Sciences & Ecology Mechanics Oceanography Direct numerical simulations 09 Engineering Physics::Fluid Dynamics INSTABILITIES 4012 Fluid Mechanics and Thermal Engineering HEAT-TRANSFER Meteorology & Atmospheric Sciences Environmental Chemistry [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] 01 Mathematical Sciences Water Science and Technology 40 Engineering Front-tracking Science & Technology 02 Physical Sciences EVOLUTION Multiphase flows Physical Sciences SIMULATION Water Resources Falling films WAVE FORMATION Life Sciences & Biomedicine Environmental Sciences |
| Zdroj: | Environmental Fluid Mechanics Environmental Fluid Mechanics, 2022, ⟨10.1007/s10652-022-09849-2⟩ |
| ISSN: | 1567-7419 1573-1510 |
| DOI: | 10.1007/s10652-022-09849-2⟩ |
| Popis: | In this article, we present a full three-dimensional numerical study of thin liquid films falling on a vertical surface, by solving the full three-dimensional Navier–Stokes equations with a hybrid front-tracking/level-set method for tracking the interface. General falling film flow applications span across many types of process industries but also occur in a multitude of natural and environmental applications such as ice sheets, glaciology and even volcanic lava flows. In this study, we propose three configurations of falling films. Two of them, with small and moderate Reynolds number, are set to mimic pulsed and forced falling film types inside a minimum periodic domain, able to cover entirely the temporal evolution of a single wave. The latest example, corresponding to a high Reynolds number, is initialised with a flat interface without any specific perturbations. For the first time, this study highlights the natural transition from a non-deformed interface to its first streamwise disturbance (two-dimensional wavy flow), and then a second spanwise wave disturbance (three-dimensional wavy flow). |
| Databáze: | OpenAIRE |
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