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

Spraying Urea solution in SCR

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

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   February 13, 2008, 15:39
Default Spraying Urea solution in SCR
  #1
Lokesh
Guest
 
Posts: n/a
Hi

Can anybody help me regarding Spraying Urea in Catalyst. I putted all the parameters but unable to put injector in SCR Can you suggest how to put injector, because error says that I have not placed any injector.

Do we need to create injector in geometry itself or we can choose it after meshing. I want to put injector at different places in side the pipe. I know the other parameters of injector.

Thanks

From Lokesh

  Reply With Quote

Old   February 14, 2008, 19:36
Default Re: Spraying Urea solution in SCR
  #2
Andrea
Guest
 
Posts: n/a
Hi
you can put your injector where you want, just specify what type of numerical procedure you want to use (lagrangian I suppose). Then with the Star-Gui in Lagrangian Multiphase->Droplet Control you can specify if you are simulating a spray injection with atomization or a explicit defined parcel inj.
You don't need to model all the injector geometry: you must define a csys for your injector and place that csys where you want to put the orifice of your injector, in your model. Then in Star Gui->Spray Injection and Atomization (if you choose this option) you must use the csys that you have just defined above.
Hope that help!
Regards
  Reply With Quote

Old   February 15, 2008, 15:29
Default Re: Spraying Urea solution in SCR
  #3
Lokesh
Guest
 
Posts: n/a
Hi Andrea

I got you, but could you please suggest me how to use csys I used the command says enter ic(1). mesh> then what to do with that

Thanks a lot

From Lokesh

  Reply With Quote

Old   February 16, 2008, 02:04
Default Re: Spraying Urea solution in SCR
  #4
pullaiah g
Guest
 
Posts: n/a
Hi Lokesh,

csys is available at the left-bottom corner of PROSTAR mail window, that will display all co-ordinate systems available in your model. there you can define your own location for coordinate system(ie point where you want to inject)as local co-orinate system. and directly specify this co-ordinate system number in defining parameters for injector in Lagrangian multiphase in star-guide. I am also working o similar problem, I want your help in this regard, can u please help in getting properties of urea and HNCO. And can you tell me if you have any data regarding urea decomposition and hydrolysis. thank you.
  Reply With Quote

Old   February 17, 2008, 07:59
Default Re: Spraying Urea solution in SCR
  #5
Andrea
Guest
 
Posts: n/a
Using the csys command it's simple:
you can use the GUI Panel on the left of the screen or the text command as (for example) loca,23,cyli,1,0.023,-0.6,0,0,106 where I define the csys23 as local, cylindrical, etc.(you can find info about that command in the help box).
For spray injection the liquid is injected following the z-axis of the csys you want to use, so keep it in mind when you define your coord. system.
For pullaiah, sorry but I have no info about Urea and HNCO...I think that you need to look at some special chem site or archive.
Regards,
Andrea
  Reply With Quote

Old   February 20, 2008, 12:08
Default Re: Spraying Urea solution in SCR
  #6
Lokesh
Guest
 
Posts: n/a
Hi thanks for help

I am also searching for that. My source is tech papers. If I am able to find them I will post you as soon as possible

Thanks

Bye

  Reply With Quote

Old   February 28, 2008, 17:43
Default Re: Spraying Urea solution in SCR
  #7
Lokesh
Guest
 
Posts: n/a
Hi

check this paper 2004-01-1944 SAE paper for urea solution properties.

  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
Urea properties Lokesh Siemens 7 April 15, 2017 05:28
urea injection Ning FLUENT 0 February 26, 2009 02:52
spraying non newtonian fluids IƱigo Main CFD Forum 0 October 4, 2005 10:36
Spraying a fluid Pascale Fonteijn CFX 1 October 16, 2003 07:26
plasma spraying bivan Main CFD Forum 0 August 24, 2000 01:02


All times are GMT -4. The time now is 07:53.