CFD Online Logo CFD Online URL
www.cfd-online.com
[Sponsors]
Home > Forums > Software User Forums > OpenFOAM

OpenFoam solver for water droplet injection into airflow

Register Blogs Members List Search Today's Posts Mark Forums Read

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   May 8, 2022, 04:51
Default OpenFoam solver for water droplet injection into airflow
  #1
New Member
 
Lennart
Join Date: May 2022
Posts: 15
Rep Power: 4
levoCFD is on a distinguished road
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
levoCFD is offline   Reply With Quote

Old   May 17, 2022, 03:56
Default
  #2
New Member
 
Join Date: May 2022
Posts: 1
Rep Power: 0
jihouni is on a distinguished road
I am looking for the same thing as you, do you have any solution? Can you share it with me?


jihouni is offline   Reply With Quote

Old   May 17, 2022, 04:19
Default
  #3
New Member
 
Lennart
Join Date: May 2022
Posts: 15
Rep Power: 4
levoCFD is on a distinguished road
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 is offline   Reply With Quote

Old   July 29, 2022, 09:20
Default
  #4
New Member
 
Lennart
Join Date: May 2022
Posts: 15
Rep Power: 4
levoCFD is on a distinguished road
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.
levoCFD is offline   Reply With Quote

Old   July 19, 2023, 00:53
Default
  #5
New Member
 
Isabel Owen
Join Date: Jul 2023
Posts: 1
Rep Power: 0
meansussex is on a distinguished road
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

meansussex is offline   Reply With Quote

Old   July 19, 2023, 03:11
Default
  #6
New Member
 
Lennart
Join Date: May 2022
Posts: 15
Rep Power: 4
levoCFD is on a distinguished road
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...
levoCFD is offline   Reply With Quote

Old   July 19, 2023, 11:12
Default
  #7
New Member
 
Luis Atkinson
Join Date: Jul 2023
Posts: 1
Rep Power: 0
bigthrough is on a distinguished road
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.

bigthrough is offline   Reply With Quote

Reply

Tags
droplet, evaporation, lagrangian, multi-phase, solver

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
Frequently Asked Questions about Installing OpenFOAM wyldckat OpenFOAM Installation 3 November 14, 2023 11:58
Density-based, fully-coupled, compressible solver in OpenFOAM? francesco_capuano OpenFOAM Running, Solving & CFD 7 November 20, 2018 13:12
[ANSYS Meshing] Help with element size sandri_92 ANSYS Meshing & Geometry 14 November 14, 2018 07:54
OpenFOAM Training Jan-Jul 2017, Virtual, London, Houston, Berlin CFDFoundation OpenFOAM Announcements from Other Sources 0 January 4, 2017 06:15
fluent divergence for no reason sufjanst FLUENT 2 March 23, 2016 16:08


All times are GMT -4. The time now is 23:48.