Autor: |
S. Marrone, F. Saltari, J. Michel, F. Mastroddi |
Rok vydání: |
2023 |
Předmět: |
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Zdroj: |
Journal of Fluids and Structures. 119:103877 |
ISSN: |
0889-9746 |
DOI: |
10.1016/j.jfluidstructs.2023.103877 |
Popis: |
In the present work the damping effect of sloshing flows in tanks subjected to vertical harmonic oscillations is modelled through the Smoothed Particle Hydro- dynamics (SPH) numerical method. The prediction of energy dissipation in theseproblems is of interest, among the others, in the aeronautic field to appropriately address sloshing-induced loads on aircraft wings. To this purpose, an enhancedSPH scheme is applied and extensively validated through a comparison with a recent experimental campaign in which a partially filled tank is subjected to har-monic vertical accelerations ranging from 0.25𝑔 up to 6𝑔. Conversely to previousworks addressing the same phenomenon, in the present work long-time simulations are performed spanning over several periods of oscillations. This approachallows comparing the predicted energy dissipation in terms of averages computedover several tank oscillations, thus providing a robust numerical outcome. Thenumerical scheme is tested over a large matrix of different frequencies and accelerations covering a wide range of flow regimes and spanning from mildly-deformedfree surface to violent shaken flow. Both 2D and 3D numerical frameworks are considered and compared to the experimental reference. It is shown that the 3D solver is able, in most of the cases, to recover the experimental rate of dissipated energy with errors comparable to the intrinsic uncertainties of the problem whereasthe 2D solution significantly under-predicts the damping in high-energy sloshingregimes. |
Databáze: |
OpenAIRE |
Externí odkaz: |
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