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- W1982456030 abstract "Within an averaging approach, the governing equations and effective boundary conditions describing both the average and pulsation motion of a near-critical fluid subjected to high-frequency vibrations are obtained. Vibrations induce the non-homogeneities in average temperature. Owing to these non-homogeneities, the average flows can be generated even in isothermal cavity under weightlessness. These flows are examined for 1D and 2D configurations. The direct numerical simulations fulfilled earlier confirm the averaged model, we obtain the same flow structures by essentially smaller requirements for computational time. To cite this article: A.Vorobev et al., C. R. Mecanique 332 (2004). La procédure de moyennisation nous permet d'obtenir les équations du mouvement d'un fluide supercritique soumis à des vibrations de haute fréquence et les conditions aux limites associées. La vibration génère des non-homogénéités du champ de température moyen. En raison de ces non-homogénéités, l'écoulement moyen existe même au sein d'une cavité isotherme et en micropesanteur. Cette nouvelle formulation nous a permis d'analyser de façon commode des structures d'écoulement 1D et 2D. Les résultats obtenus à partir de la formulation des équations moyennées sont en accord avec des résultats de simulation numériques directe précédemment obtenus et nécessitant des temps de calculs excessifs. Pour citer cet article : A.Vorobev et al., C. R. Mecanique 332 (2004)." @default.
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- W1982456030 date "2004-10-01" @default.
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- W1982456030 title "Validation of averaged equations for thermal vibrational convection in near-critical fluids" @default.
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- W1982456030 doi "https://doi.org/10.1016/j.crme.2004.05.003" @default.
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