when fuel is sprayed in engine, jet primary and secondary breakup happen and tiny droplets are formed. The performance of fuel spray in engine depends on the size of these droplets.
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
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”
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:
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,now. It can be download and compiled with following commands in Linux terminal.
git clone https://github.com/NimaSam/phaseChangeHeatFoam/ cd phaseChangeHeatFoam/Application/ chmod +x All* ./Allwmake