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293c0c3014
Resolves bug-report https://bugs.openfoam.org/view.php?id=2785 ENH: compressibleInterFoam family: merged two-phase momentum stress modelling from compressibleInterPhaseTransportFoam The new momentum stress model selector class compressibleInterPhaseTransportModel is now used to select between the options: Description Transport model selection class for the compressibleInterFoam family of solvers. By default the standard mixture transport modelling approach is used in which a single momentum stress model (laminar, non-Newtonian, LES or RAS) is constructed for the mixture. However if the \c simulationType in constant/turbulenceProperties is set to \c twoPhaseTransport the alternative Euler-Euler two-phase transport modelling approach is used in which separate stress models (laminar, non-Newtonian, LES or RAS) are instantiated for each of the two phases allowing for different modeling for the phases. Mixture and two-phase momentum stress modelling is now supported in compressibleInterFoam, compressibleInterDyMFoam and compressibleInterFilmFoam. The prototype compressibleInterPhaseTransportFoam solver is no longer needed and has been removed.
42 lines
1.5 KiB
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42 lines
1.5 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 compressibleInterFoam with turbulenceProperties simulationType set to
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twoPhaseTransport separate stress models (laminar, non-Newtonian, LES or RAS)
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are instantiated for each of the two phases allowing for different modeling for
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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/turbulenceProperties.air:
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- stress model set to laminar, Newtonian
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- constant/thermophysicalProperties.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/turbulenceProperties.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/thermophysicalProperties.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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compressibleInterFoam solves the energy equation, despite not being needed in
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this example. The case is simply initialised at a uniform temperature of 300K
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throughout the domain and at the atmosphere boundary.
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