For numerical simulation of wave body interaction several solver is developed in OpenFOAM such as:
- olaFoam (or olaFlow)
Those solvers are developed based on OpenFOAM solver interFoam which is a VoF solver. In this post, i will discuss about olaFoam
Continue reading “Numerical simulation of wave body interaction using olaDyMFoam”
Nusslet Number is a dimensionless number and usually reported in heat transfer context. It is defined as:
Continue reading “Calculate Nusslet number along pipe”
There are two wall functions in OpenFOAM to consider turbulent diffusion near wall.
These two functions are:
Continue reading “Implement new turbulent diffusion wall function at OpenFOAM”
OpenFOAM has several heat transfer solvers such as:
- buoyantBoussinesqPimpleFoam, buoyantBoussinesqSimpleFoam
- buoyantPimpleFoam, buoyantSimpleFoam
- chtMultiRegionFoam, chtMultiRegionSimpleFoam
Continue reading “Heat Transfer in Drop Impact”
Vortex shedding is a common phenomena when a fluid flow passes around a body. Here, the vortex shedding of viscoelastic fluid around oscillating cylinder is simulated. For simulation, dynamic mesh library is added to OpenFOAM solver viscoelasticFluidFlow. The solver is available only in foam-extended versions.
Continue reading “Numerical Simulation of Viscoelastic Fluid around Oscillating Cylinder”
In this post, i presented my simulation of free surface over cylindrical spillway using OpenFOAM solver (interFoam).
following steps are conducted for preparing case:
Continue reading “Numerical Simulation of Free Surface over Spillway”
In this study, the numerical analysis on the performance of solar chimney is done using buoyantBoussinesqSimpleFoam.
Continue reading “Numerical Simulation of Solar Chimney”
CFD simulation is helpful for the prediction of ventilation system performance. In this post, I redid the study of Kobayashi  using buoyantBoussinesqSimpleFoam in OpenFOAM.
Continue reading “Numerical Simulation of Ventilation in a Room”
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 .
Continue reading “OpenFOAM Schemes”
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.
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 interface is the key parameter in simulation of 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 it’s 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 form interFoam is:
Continue reading “Free Surface Simulation”