CFD Online Logo CFD Online URL
Home > Forums > FLUENT

modelling shattering of a droplet using DPM

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

LinkBack Thread Tools Display Modes
Old   May 19, 2006, 11:21
Default modelling shattering of a droplet using DPM
Posts: n/a
Dear Forum People!

I am trying to model the shattering of droplets, i.e. blasting of a droplet into smaller droplets after it hits a wall. I decided to use DPM approach for that.

I can find FLUENT macros to deal with the droplet after it strikes the wall, for example, I can make it disappear or i can change its velocity vector to make it rebounce. It can be all done within the DEFINE_DPM_BC subroutine.

The question appears how can I introduce many droplets, i.e. secondary droplets, in the place where the primary droplet strikes. It takes place when the droplet hit the wall with high velocity. It seems the answer can be provided by using DEFINE_DPM_INJECTION_INIT subroutine. I have to , however, hook this subroutine in FLUENT providing information if it is a surface , single, group or atomizer type of injection (hope you know what im writing about). I have tried to use this subroutine to form injections of small satelite droplets that orginate from the same point (as it occurs in shatteing) and i have not managed.

Maybe some of you have met the same problem and hopefully some solution to it as well?

Best Regards

  Reply With Quote


Thread Tools
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 On
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
DPM model, droplet size distribution in atomizer model davidx FLUENT 2 November 13, 2010 03:43
Droplet Collision Efficiency Calculation using DPM Virk FLUENT 0 January 22, 2010 10:37
DPM - Droplet Shrinkage Woo Meng Wai FLUENT 2 September 14, 2007 23:08
DPM Modelling: Colloid droplet evaporation Meng Wai Woo FLUENT 1 August 1, 2007 00:27
DPM Droplet Evaporation Meng Wai Woo FLUENT 0 July 26, 2007 10:16

All times are GMT -4. The time now is 03:41.