37 lines
1.3 KiB
Plaintext
37 lines
1.3 KiB
Plaintext
Reference:
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Figueiredo, R. A., Oishi, C. M., Afonso, A. M., Tasso, I. V. M., &
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Cuminato, J. A. (2016).
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A two-phase solver for complex fluids: Studies of the Weissenberg effect.
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International Journal of Multiphase Flow, 84, 98-115.
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In interFoam with momentumTransport simulationType set to twoPhaseTransport
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separate stress models (laminar, non-Newtonian, LES or RAS) are instantiated for
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each of the two phases allowing for different modeling for the phases.
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This example case uses:
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- phases "air" and "liquid"
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- air phase
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- constant/momentumTransport.air:
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- stress model set to laminar, Newtonian
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- constant/physicalProperties.air:
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- transport set to const (Newtonian)
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- mu (dynamic viscoity) = 1.84e-5
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- liquid phase
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- constant/momentumTransport.liquid:
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- stress model set to laminar, Maxwell non-Newtonian
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- nuM (kinematic viscosity) = 0.01476
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- lambda = 0.018225
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- constant/physicalProperties.liquid
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- transport set to const (Newtonian)
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- mu (dynamic viscoity) = 1.46
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Liquid phase properties were calculated from the relations given in the paper:
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- rho = 890 kg/m^3
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- mu = mu_{s} + mu_{p} = 146 poise = 14.6 Pa.s
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s = solvent (Newtonian), p = polymer (Maxwell)
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- mu_{s}/mu_{p} = 1/9
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=> mu_{s} = 14.6/10 = 1.46 Pa.s
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=> nu_{p} = nuM = (9/10)*14.6/890 = 0.01476 m^2/s
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