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

sprayFoam: thetaOuter and thetaInner

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   December 14, 2014, 23:17
Default sprayFoam: thetaOuter and thetaInner
  #1
Member
 
Neilson Whit
Join Date: Aug 2011
Posts: 74
Rep Power: 14
wolfindark is on a distinguished road
Dear All

I simulate a full cone spray with an angle of 30 -degree.

In the constant/sprayCloudProperties file, I enter two parameters as follows;
Code:
thetaInner      constant 0.0;
thetaOuter      constant 15.0 ;
When Iook at the source code, thetaOuter seems as half-cone angle. But from the Lagrangian results, spray seems very narrow angle as if 15-degree full-cone angle.

What is the thetaOut ? half-cone angle? or full-cone angle?
wolfindark is offline   Reply With Quote

Old   December 15, 2014, 16:16
Default
  #2
Senior Member
 
Join Date: Jan 2010
Location: Stuttgart
Posts: 150
Rep Power: 16
Chrisi1984 is on a distinguished road
Hello,

as you found out by checking the source code, the outer angle is the half angle of the full cone (at least for OpenFOAM version 2.1 or later)

Kind regards
Chrisi
Chrisi1984 is offline   Reply With Quote

Old   December 19, 2014, 08:24
Default
  #3
New Member
 
saeed
Join Date: Jul 2013
Posts: 11
Rep Power: 12
saeedshayae is on a distinguished road
I think the angles (inner and outer) are half-cone and are measured from center-line. then, for full-cone sprays always theta inner = 0 and theta outer is half-cone of spray angle.
Attached Images
File Type: png Untitled.png (8.1 KB, 250 views)
saeedshayae is offline   Reply With Quote

Old   July 1, 2016, 15:29
Default
  #4
New Member
 
Luis Fernando Rua Mojica
Join Date: May 2016
Location: Monterrey - México
Posts: 10
Rep Power: 9
ruamojica is on a distinguished road
Hi saeedshayae,

can you tell me the reference of that image?
I'm learning about the injection process and that image is good, I want know to more about it

thanks
ruamojica is offline   Reply With Quote

Old   July 1, 2016, 17:23
Default
  #5
New Member
 
saeed
Join Date: Jul 2013
Posts: 11
Rep Power: 12
saeedshayae is on a distinguished road
Quote:
Originally Posted by ruamojica View Post
Hi saeedshayae,

can you tell me the reference of that image?
I'm learning about the injection process and that image is good, I want know to more about it

thanks
It is base on
"Modelling of Gasoline and Ethanol Hollow-Cone Sprays
Using OpenFOAM, Chen Huang and Andrei Lipatnikov,JSAE 20119069
SAE 2011-01-1896" .
saeedshayae is offline   Reply With Quote

Old   July 4, 2016, 18:31
Default
  #6
New Member
 
Luis Fernando Rua Mojica
Join Date: May 2016
Location: Monterrey - México
Posts: 10
Rep Power: 9
ruamojica is on a distinguished road
thanks!!!!
ruamojica is offline   Reply With Quote

Old   July 17, 2019, 03:45
Default Cone Spray Angle
  #7
New Member
 
Pranav Uchiha
Join Date: Jul 2019
Posts: 2
Rep Power: 0
pranavbahldce@gmail.com is on a distinguished road
Dear All,


Can I ask how did you calculate the cone angle which you needed, theoretically ? or it was an experimental result ? Probably this is a bit off topic but still.
pranavbahldce@gmail.com is offline   Reply With Quote

Reply

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
Bubble column with sprayFoam dav.dap83 OpenFOAM Running, Solving & CFD 18 November 30, 2020 15:06
Using sprayFOAM on cyclic problem with wedge boundaries Mentalo OpenFOAM Running, Solving & CFD 5 September 7, 2018 03:12


All times are GMT -4. The time now is 17:59.