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

MassFlowRate

Register Blogs Community New Posts Updated Threads Search

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
Old   July 2, 2010, 09:11
Default MassFlowRate
  #1
Senior Member
 
Rickard
Join Date: May 2010
Location: Lund, Skåne, Sweden
Posts: 143
Rep Power: 16
Rickard.Solsjo is on a distinguished road
Hi, I want to inject fuel in a gaseous phase using diselFoam.
The gas-phase is no problem since I just increase the temperature.
The thing is that is want to have two injections using 0.7mg of fuel at each injection with a 200microseconds injection duration.

I thought that is simply could write something like

mass 1.4e-6;
nParcels 2;

massFlowRate
(0 0)
(0.0002 0.0016)
(0.003 0)
(0.0032 0.0016)

the 0.0016 was calculated using Cd*Af*sqrt(deltaP*2*rho(fuel))

Any good reason why this do not work? I have looked at the other threads still my problems remains.

Thx
R
Rickard.Solsjo is offline   Reply With Quote

Old   July 10, 2010, 06:12
Default
  #2
Senior Member
 
Rickard
Join Date: May 2010
Location: Lund, Skåne, Sweden
Posts: 143
Rep Power: 16
Rickard.Solsjo is on a distinguished road
I guess i fixed my own problem.
Important notice is that the pressureProfile must be added
I try to use injection as a delta function or whatever you wanna call it.

so .
mas...
(0.00019 0)
(0.00020 1.0)
(0.00021 0)

(0.00319 0)
(0.00320 1.0)
(0.00321 0)

press..
(0.00019 1.0)
(0.00321 1.0)

Hopefull dieselfoam calculates the massflowrate on its own-
Rickard.Solsjo is offline   Reply With Quote

Reply


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
BuoyantSimpleFoam massFlowRate hellorishi OpenFOAM Running, Solving & CFD 0 March 13, 2009 06:57


All times are GMT -4. The time now is 00:11.