|
[Sponsors] |
September 19, 2008, 07:34 |
lagrangian multiphase analysis
|
#1 |
Guest
Posts: n/a
|
Hi !
I am using Star-CCM+ and I am doing lagrangian multiphase analysis for tracking grease droplet particles. I am simulating a simple pipe with 1 inlet and 1 outlet, and the other boundaries are set to "rebound" condition, so all the particles will escape throw the outlet. I want to calculate the quantity of particles leaving the domain, and I aspect that is the same that I inject, but it is not !!! I do a sum report of Incident mass flux on Outlet, and I multiply it for the outlet area to obtain the mass flow rate. The value that I obtain is 100 times higher than inlet value, how it is possible ? There is any other way to calculate the particle mass that leaves the domain ? thanks in advance to everybody ... Marco |
|
September 19, 2008, 09:28 |
Re: lagrangian multiphase analysis
|
#2 |
Guest
Posts: n/a
|
Incident mass flux is mass/area/time, so you should do a surface integral report of it to get mass/time. This is not the same as (area)*(sum report) unless all the faces have the same area.
Also make sure you are injecting what you think you are, e.g. is the mass flow rate specified per injection point or total. |
|
September 20, 2008, 12:41 |
Re: lagrangian multiphase analysis
|
#3 |
Guest
Posts: n/a
|
Hi, you can find anything about your particles (almost ) if you select them all and import their characteristics into a output folder. after u select the particles and plot them on the screen the commands are: ofile,part.out dlist,dset dlist,dset,,,other ofile,screen close,part.out
hope it helps! regards, lelia |
|
September 22, 2008, 10:43 |
Re: lagrangian multiphase analysis
|
#4 |
Guest
Posts: n/a
|
Thank you Richard, now it works with your advise. I don't know why I used the sum function ....
Cheers Marco |
|
Thread Tools | Search this Thread |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
lagrangian multiphase analysis | bala | Siemens | 3 | April 28, 2008 03:13 |
lagrangian multiphase analysis | bala | Siemens | 2 | April 24, 2008 08:52 |
lagrangian multiphase analysis | bala | Siemens | 0 | April 15, 2008 02:35 |
analysis restart for lagrangian multiphase | mic | Siemens | 0 | July 5, 2007 09:36 |
Lagrangian multiphase switch | Alfred Herman | Siemens | 1 | October 14, 2003 08:28 |