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A Navier-Stokes-Korteweg Model for Dynamic Wetting based on the PeTS Equation of State

Diewald, Felix ; Heier, Michaela ; Lautenschläger, Martin ; Horsch, Martin ; Kuhn, Charlotte ; Langenbach, Kai ; Hasse, Hans ; Müller, Ralf (2019)
A Navier-Stokes-Korteweg Model for Dynamic Wetting based on the PeTS Equation of State.
In: PAMM, 19 (1)
doi: 10.1002/pamm.201900091
Artikel, Bibliographie

Kurzbeschreibung (Abstract)

Dynamic wetting of component surfaces can be investigated by finite element phase field simulations. Often these models use a double-well potential or the van der Waals equation to define the local part of the free energy density at a point of the computational domain. In order to give the present model a stronger physical background the molecular dynamics based perturbed Lennard-Jones truncated and shifted (PeTS) equation of state is used instead. This results in phase field liquid-vapor interfaces that agree with the physical density gradient between the two phases. In order to investigate dynamic scenarios, the phase field description is coupled to the compressible Navier-Stokes equations. This coupling requires a constitutive equation that complies with the surface tension of the liquid-vapor interface resulting from the PeTS equation of state and is comparable to the so-called Korteweg tensor.

Typ des Eintrags: Artikel
Erschienen: 2019
Autor(en): Diewald, Felix ; Heier, Michaela ; Lautenschläger, Martin ; Horsch, Martin ; Kuhn, Charlotte ; Langenbach, Kai ; Hasse, Hans ; Müller, Ralf
Art des Eintrags: Bibliographie
Titel: A Navier-Stokes-Korteweg Model for Dynamic Wetting based on the PeTS Equation of State
Sprache: Englisch
Publikationsjahr: 18 November 2019
Verlag: Wiley
Titel der Zeitschrift, Zeitung oder Schriftenreihe: PAMM
Jahrgang/Volume einer Zeitschrift: 19
(Heft-)Nummer: 1
DOI: 10.1002/pamm.201900091
URL / URN: https://onlinelibrary.wiley.com/doi/abs/10.1002/pamm.2019000...
Kurzbeschreibung (Abstract):

Dynamic wetting of component surfaces can be investigated by finite element phase field simulations. Often these models use a double-well potential or the van der Waals equation to define the local part of the free energy density at a point of the computational domain. In order to give the present model a stronger physical background the molecular dynamics based perturbed Lennard-Jones truncated and shifted (PeTS) equation of state is used instead. This results in phase field liquid-vapor interfaces that agree with the physical density gradient between the two phases. In order to investigate dynamic scenarios, the phase field description is coupled to the compressible Navier-Stokes equations. This coupling requires a constitutive equation that complies with the surface tension of the liquid-vapor interface resulting from the PeTS equation of state and is comparable to the so-called Korteweg tensor.

Fachbereich(e)/-gebiet(e): 13 Fachbereich Bau- und Umweltingenieurwissenschaften
13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik
13 Fachbereich Bau- und Umweltingenieurwissenschaften > Fachgebiete der Mechanik > Fachgebiet Kontinuumsmechanik
Hinterlegungsdatum: 04 Mai 2022 07:51
Letzte Änderung: 04 Mai 2022 07:51
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