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Boundary condition ...
Boundary condition considerations in lattice Boltzmann formulations of wetting binary fluids
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- Wiklund, Hanna (author)
- Mittuniversitetet,Institutionen för naturvetenskap, teknik och matematik (-2012),Fibre-based material technology,Fibre Science and Communication Network (FSCN), Mid Sweden University, Sundsvall, Sweden
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- Lindstrom, Stefan B. (author)
- KTH,Fiber- och polymerteknologi,Department of Fibre and Polymer Technology, Royal Institute of Technology, SE-100 44 Stockholm,Department of Fibre and Polymer Technology, Royal Institute of Technology, Stockholm, Sweden,FSCN
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- Uesaka, Tetsu (author)
- Mittuniversitetet,Institutionen för naturvetenskap, teknik och matematik (-2012),Fibre Science and Communication Network (FSCN), Mid Sweden University, Sundsvall, Sweden
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(creator_code:org_t)
- Elsevier BV, 2011
- 2011
- English.
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In: Computer Physics Communications. - : Elsevier BV. - 0010-4655 .- 1879-2944. ; 182:10, s. 2192-2200
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Abstract
Subject headings
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- We propose a new lattice Boltzmann numerical scheme for binary-fluid surface interactions. The new scheme combines the existing binary free energy lattice Boltzmann method [Swift et al., Phys. Rev. E 54 (1996)] and a new wetting boundary condition for diffuse interface methods in order to eliminate spurious variations in the order parameter at solid surfaces. We use a cubic form for the surface free energy density and also take into account the contribution from free energy in the volume when discretizing the wetting boundary condition. This allows us to eliminate the spurious variation in the order parameter seen in previous implementations. With the new scheme a larger range of equilibrium contact angles are possible to reproduce and capillary intrusion can be simulated at higher accuracy at lower resolution.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Data- och informationsvetenskap (hsv//swe)
- NATURAL SCIENCES -- Computer and Information Sciences (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Strömningsmekanik och akustik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Fluid Mechanics and Acoustics (hsv//eng)
Keyword
- Lattice Boltzmann
- Binary fluid
- Wetting surface
- Boundary condition
Publication and Content Type
- ref (subject category)
- art (subject category)
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