Numerical Simulation of Free Surface over Spillway

In this post, i presented my simulation of free surface over cylindrical spillway using OpenFOAM solver (interFoam).
following steps are conducted for preparing case:

Numerical Simulation of Solar Chimney

In this study, the numerical analysis on the performance of solar chimney is done using buoyantBoussinesqSimpleFoam.

Numerical Simulation of Ventilation in a Room

CFD simulation is helpful for the prediction of ventilation system performance. In this post, I redid the study of Kobayashi [1] using buoyantBoussinesqSimpleFoam in OpenFOAM.

OpenFOAM Schemes

In this short post, the effect of numerical scheme on convection term is investigated. The following problem is considered. More information about this problem can be found in Introduction to Computational Fluid Dynamics [1].

OpenFOAM workshop at IHA

I  cooperate with different groups and organization for OpenFOAM training.

IHA (Iranian Hydraulic Association)  is one of them. The workshop is held in 3 levels, one introductory level and two complementary levels.

Free Surface Simulation

Many different phenomena in industry or nature include a deformable interface for example the water falling from a spillway. The simulation of such events is essential to better understanding of two-phase flow behavior, in order to optimize the design or to calculate hydrodynamic coefficients. The precise and correct modeling of the interface is the key parameter in the simulation of a free surface. There are different interface tracking methods such as VoF (volume of fluid), LS (level set), and  FT (front tracking). Each method has its own advantages and disadvantages, however, VoF is becoming the most common interface tracking method due to its ease of implementation and mass conservation.  OpenFOAM VoF solver is interFoam. The solver uses a technique called MULES to compress the interface and return the sharp interface. The interFoam is suitable for two-phase isothermal incompressible system. The derived solvers from interFoam is:

Numerical Simulation Using OpenFOAM (Edition 3)

The third edition of my book on numerical simulation using OpenFOAM is available for Persian users in  book stores.

OpenFOAM prior disadvantage is the lack of wide exclusive user guide, so user needs to go through Internet to learn OpenFOAM stuffs. Here, i provide some useful links, which contain interesting tutorials and trainings. This page will be update with my new findings.

phaseChangeHeatFoam

As a part of my Ph.D. thesis, I extended an OpenFOAM solver interFoam to consider mass transfer due to boiling and condensation, new solver is called phaseChangeHeatFoam. It is available in git, it can be downloaded and compiled with the following commands in a Linux terminal.

```git clone https://github.com/NimaSam/phaseChangeHeatFoam/
cd phaseChangeHeatFoam/Application/
chmod +x All*
./Allwmake```