Název:
Mathematical modeling of planar and spherical vapor–liquid phase interfaces for multicomponent fluids
Autoři:
Celný, David ; Vinš, Václav ; Planková, Barbora ; Hrubý, Jan Typ dokumentu: Příspěvky z konference Konference/Akce: Experimental Fluid Mechanics 2015 /10./, Praha (CZ), 2015-11-17 / 2015-11-20
Rok:
2015
Jazyk:
eng
Abstrakt: Methods for accurate modeling of phase interfaces are important for understanding natural processes and application in technology. In particular, prediction of the non-equilibrium phase transition requires the knowledge of the strongly curved phase interfaces of microscopic droplets. In our work, we focus on the spherical vapor–liquid interfaces for binary mixtures. We developed a computational method able to determine the density and concentration profiles. The fundamentals of our approach lie in the gradient theory, allowing to transcribe the functional formulation into a system of Euler-Langrange equations. System is then modified into a shape suitable for iterative computation. For this task, we employ the Newton-Raphson and the shooting methods ensuring a good convergence speed. For the thermodynamic properties, the PC–SAFT EoS is used. We determined the density and concentration profiles of the binary mixture C O 2 & C 9 H 20 for spherical phase interfaces at various saturation factors.
Klíčová slova:
gradient theory; PC-SAFT EoS; spherical phase interface Číslo projektu: GAP101/11/1593 (CEP), 7F14466 (CEP) Poskytovatel projektu: GA ČR, GA MŠk Zdrojový dokument: Experimental Fluid Mechanics 2015
Instituce: Ústav termomechaniky AV ČR
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Informace o dostupnosti dokumentu:
Dokument je dostupný v příslušném ústavu Akademie věd ČR. Původní záznam: http://hdl.handle.net/11104/0254899