[levoCFD]

Hi,

I am looking for a suitable OpenFoam solver for the following problem:

A body is moving through air with a fixed velocity. At a certain location of its surface, water droplets are injected into the surrounding airflow through a nozzle.

The main goal is to analyze the droplets' effect on the flow field around the body including the following phenomena:
- heat exchange between water and air
- evaporation of droplets due to high airflow velocity and low pressure

During the analysis I would like to examine the influence of the following parameters:
- water pressure at the nozzle
- water flow rate
- water droplet size

The exact paths of the injected droplets are NOT important to me.

First, I thought about using one of the multi-phase solvers (like multiphaseEulerFoam), however here I could not find an option to simulate different droplet sizes.
Therefore, I think I might have to use a particle tracking solver, but I would appreciate your opinions on this, as well as recommendations on where to find a similar case I can use as a starting point.

Best regards,
Lennart

[jihouni]

I am looking for the same thing as you, do you have any solution? Can you share it with me?

klondike solitaire

[levoCFD]

Hi jihouni,
By now, I have come to the conclusion that if you want to simulate different droplet sizes with a multiphase solver you need a mesh that is extremely fine in order to represent the single droplets with the mesh cells. That is why I believe it is a lot more efficient to do particle tracking in this case.
If you are looking for a similar case to start with, I recommend the OpenFOAM tutorials lagrangian/reactingParcelFoam/filter and lagrangian/reactingParcelFoam/verticalChannelLTS.

[levoCFD]

Edit:

I have found out that there is indeed an option for simulating different droplet sizes in the constant/phaseProperties dictionary of the multiPhaseEulerFoam solver.

[meansussex]

asking for advice on choosing the right OpenFoam solver to analyze the effects of water droplets on the flow field around a moving object, including heat exchange and evaporation. I'm having this problem too

geometry dash unblocked

[levoCFD]

I would recommend to look into sprayFoam and reactingParcelFoam then. I have used sprayFoam, but reactingParcelFoam has a few additional features as far as I remember...

[bigthrough]

Lagrangian particle tracking solver would be a good choice for simulating the droplets' effect on the flow field. The Lagrangian approach tracks the motion of individual particles, which is useful for modeling evaporation and heat exchange.

papa's freezeria