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In the Select Physics tree, select Fluid Flow>Multiphase Flow>Two-Phase Flow, Level Set>Laminar Flow.
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Click Add.
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Click Study.
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In the Select Study tree, select Preset Studies for Selected Multiphysics>Time Dependent with Phase Initialization.
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Click Done.
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In the Model Builder window, under Component 1 (comp1)>Multiphysics click Two-Phase Flow, Level Set 1 (tpf1).
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Locate the Surface Tension section. Select the Include surface tension force in momentum equation check box.
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In the Model Builder window, under Component 1 (comp1)>Materials>Multiphase Material 1 (mpmat1) click Phase 1 (mpmat1.phase1).
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Click Add Material from Library . This button is found when expanding the options next to the Material list.
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In the tree, select Built-in>Air.
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Click OK.
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In the Model Builder window, under Component 1 (comp1)>Materials>Multiphase Material 1 (mpmat1) click Phase 2 (mpmat1.phase2).
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Click Add Material from Library . This button is found when expanding the options next to the Material list.
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Click OK.
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From the list, choose Pressure.
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Click Replace Expression in the upper-right corner of the Expression section. From the menu, choose Component 1 (comp1)>Level Set>ls.Vf2 - Volume fraction of fluid 2.
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Locate the Expression section.
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Click OK.
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In the Model Builder window, under Results>Volume Fraction of Fluid 1 (ls) right-click Surface 1 and choose Delete.
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Click Yes to confirm.
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Click Yes to confirm.
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In the Model Builder window, expand the Results>Volume Fraction of Fluid 1 (ls) 1 node, then click Volume Fraction of Fluid 1 (ls) 1.
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Click OK.
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Click Yes to confirm.
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Click OK.
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Click OK.
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In the Settings window for Color Expression, click Replace Expression in the upper-right corner of the Expression section. From the menu, choose Component 1 (comp1)>Definitions>Variables>theta - Contact angle expression.
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