... will require a number of decisions associated to multiphase flow. production monitoring test case inclination fluid dynamics geometry snapshot show boundary condition production logging reservoir surveillance solver evolution initial condition simulation flow regime phase distribution...

... & simulation upstream oil & gas boundary point pig velocity equation boundary condition bypass pig pig-generated slug bypass time step pig motion two-fluid model liquid slug holdup bhr group mpt2019 discretization eigenvalue pipeline pigging Simulation of slug propagation for by-pass...

... configuration it is important to define the slug length and velocity at the inlet to correctly predict force magnitudes and frequencies. A novel approach is presented which uses a quasi-three-dimensional (Q3D) CFD method to obtain horizontal slug flow inlet boundary conditions for subsequent force prediction...

... to the model are permeabilites and porosities of the porous medium, fluid properties of the flowing phases and, if needed, thermal properties of the rock and fluids. In addition boundary conditions at the well and at the outer near well boundary are needed. Typical time-dependent boundary conditions are either...

... chambers of the pump and the loss flow are calculated. Boundary conditions are set up to ensure continous pressure raise in the chambers while they are moved from inlet to outlet. Etzold [3] solves the boundary value problem by reducing it to an initial value problem which is iteratively solved. Wincek [4...