Center of Engineering and Multiscale modeling of Fluid flow
twoPhaseEulerFoam is a solver for a system of 2 non-reacting compressible fluid phases. One phase in this system is always dispersed. So it is a good candidate for simulating bubble columns in gas/liquid systems or fluidized beds and spouted beds in gas/solid systems. The solver also solves the energy equation (enthalpy or internal energy) for both phases and couple them by the one-film resistance heat transfer model.
In the case of gas-liquid systems, laminar and turbulence models (RAS and LES) models can be selected for both phases. In this case of gas-solid or liquid solid systems, these models can only be applied for the fluid phase. The solid phase momentum equation incorporates a model for the stress tensor. Two main approaches are possible: inviscid solid phase with a pressure model and a solid phase with stress tensor that is obtained by KTGF theory and frictional models.
Various sub-models for interphase coupling are also provided that make it possible to select a wide range of physical models for the system. It is also possible to extend the standard solver to include new sub-models in the simulation.
Two-phase stirred tanks are two phase reactors with enhanced mixing and elongated gas holdup and residence time in comparison to bubble columns. They may contain one or more sets of impellers that promote mixing force and help bubble breakage to enhance gas-liquid contact. In this tutorial, you will learn how…
You will learn how to simulate a bubble column suing OpenFAOM®. All the details on sub-models and simulation settings are presented in this tutorial. You can also see the animation of the simulation results here.
You always face times that you want to add new physical models to your solver. In two-phase simulations, drag model and turbulence model are perhaps two of the most important ones that one may want to change. In this tutorial you will learn how to add these physical models to the…
In this tutorial you will learn how to simulate a gas-solid fluidized bed using OpenFOAM® (twoPhaseEulerFoam). The tutorial also contains a complete description of physical models and available options through which you can customize your simulation. In addition, you can see the animation of this simulation here. The video is…