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- - **B.C.s for Multilayer Stratified flows using FLUENT Eul-Eul model**
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B.C.s for Multilayer Stratified flows using FLUENT Eul-Eul modelHello!
This is my first approach to multiphase model using FLUENT. I am starting my thesis on CFD analysis for multilayer shallow water flows. In particular i am trying to compare results obtained from simplyfied models with complete NS equations solver. My first question is : once shallow water model introduce one momentum equation per layer, the best choice should be euler-euler model instead of VOF. Am i right? My test case is composed by 3 layers: 1) air 2) water with density rho1 3) water with density rho2 Press outlet?? .......................... ________________________________ ..........................|....................... ...........................| .........inlet air.......|........velocity =0...........................| outlet air ..........................|_______________________ ________| ..........................|....................... ...........................| .........inlet water1.|........velocity =0.5.........................| outlet water1 ..........................|_______________________ ________| ..........................|....................... ...........................| .........inlet water2.|........velocity =1...........................| outlet water2 ..........................|_______________________ ________| .............................................wall i have one inlet boundary and one outlet boundary per each phase. I tryed different combinations of boundary condition types but i got or divergence or problem with pressure (i was expecting to find a linear vertical distribution for static pressure) and initial velocity fields. I suppose that solution initialization is done correctly using patching. Does anybody know how to set correctly BCs? Thanks! |

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