SEARCH Articles Figures Tables Explicit Fractional Step Algorithm for Solving the Two-Fluid Model Equations Applied to Bubble Column Flow Model equations Modeling equations Modelling equations Solving the Two-Fluid Model Equations Two equations Two-Equation Model for Catalytic Reactor Two-Equation Model for Gas Adsorption Two-dimensional Model of PBMR - The Energy-balance Equation Two-dimensional Model of PBMR - The Mass-balance Equation Two-dimensional Model of PBMR - The Momentum-balance Equation Vapor-Liquid Equilibrium Modeling with Two-Parameter Cubic Equations of State and the van der Waals Mixing Rules