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# Phase interaction options for Fluidity's multiphase flow model.
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multiphase_interaction =
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## Phase interaction options for Fluidity's multiphase flow model.
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element multiphase_interaction {
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## Fluid-particle drag term.
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element fluid_particle_drag {
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## Stokes drag correlation: 24/Re_p
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## where Re_p is the particle Reynolds number.
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element drag_correlation {
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attribute name { "stokes" },
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## Fluid-particle drag term by Wen & Yu (1966).
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element drag_correlation {
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attribute name { "wen_yu" },
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## Fluid-particle drag term by Ergun (1952).
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element drag_correlation {
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attribute name { "ergun" },
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## Heat transfer term for the
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## multiphase internal energy equation.
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## Note: Only for fluid-particle phase pairs.
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element heat_transfer {
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heat_transfer_coefficient
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heat_transfer_coefficient =
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## Heat transfer coefficient by Gunn (1978).
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element heat_transfer_coefficient {
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attribute name { "gunn" },
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