Poster De Conférence Année : 2024

Introduction of an equation of state for nirogen based described by the free Helmholz energy in the model of a spherical cavitation bubble (type Rayleigh-Plesset )

Introduction d'une équation d'état pour l'hydrogène décrite par l'énergie libre de Helmholz dans le modèle d'une bulle sphérique de cavitation (type Rayleigh-Plesset).

Résumé

The gas equation of state introduced in the modelisation of cavitation bubble influences the dynamique comportement of the latter ; the choice of this equation of state becomes pivotal as violent collapses of cavitation bubble reaches high gas pressure and temperature. The Van der Waals type of equation, in place of a perfect gas, is not sufficient to ensure fidelity to the experimental mesured gas equation of state for pressure higher than hundreds of MPa and the divergence becomes significative beyond 1 GPa for nitrogen for example. Cubic equation of state types have been used with a Rayleigh-Plesset equation in the form of Peng-Robinson'one (PG) in [1,2] and the Redlich-Kwong Peng Robinson'one (KWPG) in [1]. Correlation based the Helhmholtz energie have been also integrated from tabuled values in more advanced modelisation of the bubble dynamics using a mesh and a research of the interface liquid-gas [1,3] It will be presented a method to use a gas equation of state based on the Helmholtz energie with a Rayleigh-Plesset dynamic equation type ; first results and comparaison with litterature will be exposed. [1] S. Bidi, P. Koukouvinis, A. Papoutsakis, A. Shams and M. Gavaise ; Numerical studyof reol gas effects during bubble collapse using a desequilibrium multiphase model, Ultrasonics Sonochemistry, vol 90., (2022) [2] D. Qin, S. Lei, B. Chen, Z. Li, W. Wang, Xiaojuan Ji ; Numerical investigation on acoustic cavitation characteristics of an air-vapor bubble ; Effects of equation of state for interior gases ; Ultrasoncis sonochemistry, 97 (2023) [3] N. Kyriazis, P. Koukouvinis, M. Gavaise, ; Numerical investigation of bubble dynamics using tabulated data ; International Journal Of Multiphase Flow, Vol. 93, p158-177 (2017)
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Dates et versions

hal-04929648 , version 1 (04-02-2025)

Identifiants

  • HAL Id : hal-04929648 , version 1

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Stéphane Labouret. Introduction of an equation of state for nirogen based described by the free Helmholz energy in the model of a spherical cavitation bubble (type Rayleigh-Plesset ). ESS 18, 18th meeting of the European Society of Sonochemistry, May 2024, Leuwen, Belgium. . ⟨hal-04929648⟩
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