Diffuso-Kinetics and Diffuso-Mechanics of Carbon Dioxide / Polyvinylidene Fluoride System under Explosive Gas Decompression: Identification of Key Diffuso-Elastic Couplings by Numerical and Experimental Confrontation
| Autor: | Jean-Claude Grandidier, Cédric Baudet, Laurent Cangemi, Marie-Hélène Klopffer, Séverine A.E. Boyer |
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| Přispěvatelé: | Institut Pprime (PPRIME), ENSMA-Centre National de la Recherche Scientifique (CNRS)-Université de Poitiers, IFP Energies nouvelles (IFPEN) |
| Jazyk: | angličtina |
| Rok vydání: | 2015 |
| Předmět: |
Work (thermodynamics)
Explosive material General Chemical Engineering Energy Engineering and Power Technology Thermodynamics 02 engineering and technology 010402 general chemistry lcsh:Chemical technology lcsh:HD9502-9502.5 01 natural sciences chemistry.chemical_compound Gaseous diffusion [CHIM]Chemical Sciences lcsh:TP1-1185 Diffusion (business) Coupling Mechanics 021001 nanoscience & nanotechnology Polyvinylidene fluoride lcsh:Energy industries. Energy policy. Fuel trade 0104 chemical sciences Fuel Technology [CHIM.POLY]Chemical Sciences/Polymers chemistry Volume (thermodynamics) 13. Climate action Direct coupling 0210 nano-technology |
| Zdroj: | Oil & Gas Science and Technology-Revue d'IFP Energies nouvelles Oil & Gas Science and Technology-Revue d'IFP Energies nouvelles, Institut Français du Pétrole, 2015, 70 (2), pp.251-266. ⟨10.2516/ogst/2013198⟩ Oil & Gas Science and Technology, Vol 70, Iss 2, Pp 251-266 (2015) |
| ISSN: | 1294-4475 1953-8189 |
| Popis: | The work aims at identifying the key diffuso-elastic couplings which characterize a numerical tool developed to simulate the irreversible ‘Explosive Decompression Failure’ (XDF) in semi-crystalline polymer. The model proposes to predict the evolution of the gas concentration and of the stress field in the polymer during the gas desorption [DOI: 10.1016/j.compositesa.2005.05.021]. Main difficulty is to couple thermal, mechanical and diffusive effects that occur simultaneously during the gas desorption. The couplings are splitting into two families: indirect coupling (i.e., phenomenology) that is state variables (gas concentration, temperature, and pressure) dependent. direct coupling, (i.e., diffuso-elastic coupling) as polymer volume changes because of gas diffusion; The numerical prediction of the diffusion kinetics and of the volume strain (swelling) of PVF2 (polyvinylidene fluoride) under CO2 (carbon dioxide) environment is concerned. The prediction is carried out by studying selected combinations of couplings for a broad range of CO2 pressures. The modeling relevance is evaluated by a comparison with experimental transport parameters analytically identify from solubility tests. A pertinent result of the present study is to have demonstrated the non-uniqueness of the coefficients of diffusion (D) and solubility (Sg) between the diffuso-elastic coupling (direct coupling) and indirect coupling. Main conclusion is that it is necessary to consider concomitantly the two types of couplings, the indirect and the direct couplings. |
| Databáze: | OpenAIRE |
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