CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > FLUENT

Help with modeling a spray from a nozzle

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

LinkBack Thread Tools Search this Thread Display Modes
Old   January 15, 2020, 18:35
Default Help with modeling a spray from a nozzle
New Member
Join Date: Dec 2019
Posts: 1
Rep Power: 0
dmcguire123 is on a distinguished road
I am pretty new to Ansys and I am currently working on this seemingly easy problem with Ansys Fluent.

I am modeling the spray from a particular nozzle, and I am mainly concerned with studying the droplets from this spray at a given point (in particular the droplet dispersion and droplet diameters)

The type of dispersion I am looking for is produced by a Hollow Cone Spray, which matches the droplet dispersion created by the "pressure swirl atomizer" injection type.

The spray liquid would be water, and it would be injected into air.

I have followed the DPM tutorial, and the "evaporating liquid spray" tutorial but neither really helped me achieve my simple spray.

I am wondering, for this case scenario, would all I need to do from the meshing would be the fluid domain of air that the spray injects into. Can I disregard the nozzle geometry, and its mass_flow_inlet etc, and essentially have no 'inlet' boundary conditions and purely use the injection from the discrete phase model?

Apologies if I missed something, but any tips, advice and help is appreciated. If I missed vital information I can provide more inormation.

dmcguire123 is offline   Reply With Quote

Old   January 20, 2020, 00:26
Dnyanesh Mirikar
Join Date: Jul 2019
Posts: 35
Rep Power: 6
DnyanMiri is on a distinguished road
Yes, you can simulate the spray using a pressure swirl atomizer without using the 'inlet' boundary condition. When you use the default injections you don't need to create a nozzle but you must provide the mass flow rate. Your flow domain should be meshed to simulate the spray. I didn't get any particulars from your question, so hope this helps you.
DnyanMiri is offline   Reply With Quote

Old   June 9, 2021, 03:34
Vignesh Lakshmanan
Join Date: Nov 2016
Posts: 79
Rep Power: 9
ViLaks is on a distinguished road

Sorry for restarting the thread. I just wanted to know whether flow in nozzles sprays can be always considered compressible/supersonic? Since, it also involves multiphase, it makes the computations much costlier

ViLaks is offline   Reply With Quote


dpm fluent model, fluent 19.2, spray analysis, spray injection, spray model

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
CaseSetup Nozzle Spray Pattern Jikst OpenFOAM 15 August 31, 2023 19:12
modeling a pressure swirl nozzle spray TanjuErgen FLUENT 4 October 12, 2015 03:51
Modeling internal and external flow for a nozzle smschnob Main CFD Forum 1 November 11, 2010 17:12
how to give pressure as an input in spray modeling satish Siemens 3 March 7, 2008 20:33
compressible flow in a counterflow nozzle d.vamsidhar FLUENT 0 November 24, 2005 01:45

All times are GMT -4. The time now is 01:29.