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Descripción
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| The flow over the incompressible open cavity has been studied both numerically and experimentally in previous works by the authors [6,16]. In these studies the in-depth linear stability analysis of the problem provided a detailed description of the flow features in the linear regime, where span-wise periodic perturbations over a steady two-dimensional flow were studied. The experiments conducted in said work, with span-wise walls, show the flow in a saturated state. The main structures that appear in the flow were identified as three-dimensional centrifugal modes. Even if the flow conditions for these two approaches are different, common features appear in both: the spatial structure of the modes in the saturated regime according to the experiments is the one predicted by linear analysis, but there is a shift in frequencies for the oscillating modes. The present work uses a three-dimensional non-steady direct numerical simulation (DNS) with periodic span-wise conditions to study the effect of saturation. In order to analyze the DNS results a Dynamic Mode Decomposition (DMD) was used. | |
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Internacional
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Si |
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JCR del ISI
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Si |
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Título de la revista
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Aerospace Science And Technology |
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ISSN
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1270-9638 |
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Factor de impacto JCR
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1,751 |
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Información de impacto
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Datos JCR del año 2015 |
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Volumen
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52 |
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DOI
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10.1016/j.ast.2016.02.036 |
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Número de revista
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Desde la página
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198 |
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Hasta la página
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206 |
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Mes
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MAYO |
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Ranking
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