## Simulation of conjugate heat transfer

OpenFOAM has two solvers (chtMultiRegionFoam and chtMultiRegionSimpleFoam )  for simulation of heat transfer across different materials.  When a solver has the keyword simple in it’s name in OpenFOAM, it means it uses SIMPLE algorithm for pressure-velocity decouple, Moreover, it represent it is an steady solver.

## Simulation of drop breakup

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.

## simulation of Taylor bubble in micro channel

The major two phase flow regime in the micro tubes is the Slug flow regime. In this case there is one or few bubbles inside the channel. Hence, it is usually using surface tracking techniques for simulation of two-phase flow in micro tubes.

## Numerical simulation of wave body interaction using olaDyMFoam

For numerical simulation of wave body interaction several solver is developed in OpenFOAM such as:

• olaFoam (or olaFlow)
• waveFoam

Those solvers are developed based on OpenFOAM solver interFoam which is a VoF solver. In this post, i will discuss about olaFoam

## Calculate Nusslet number along pipe

Nusslet Number is a dimensionless number and usually reported in heat transfer context. It is defined as:

## Implement new turbulent diffusion wall function at OpenFOAM

There are two wall functions in OpenFOAM to consider turbulent diffusion near wall.
These two functions are:

• allphatWallFunction
• alphatJayatillekeWallFunction

## Heat Transfer in Drop Impact

OpenFOAM has several heat transfer solvers such as:

• buoyantBoussinesqPimpleFoam, buoyantBoussinesqSimpleFoam
• buoyantPimpleFoam, buoyantSimpleFoam
• chtMultiRegionFoam, chtMultiRegionSimpleFoam

## Numerical Simulation of Viscoelastic Fluid around Oscillating Cylinder

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.

## 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.