CFD Online Logo CFD Online URL
Home > Forums > OpenFOAM Running, Solving & CFD

Swirl und tumble number

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

LinkBack Thread Tools Display Modes
Old   November 11, 2009, 12:30
Default Swirl und tumble number
Sven Degner
Join Date: Mar 2009
Location: Zürich
Posts: 55
Rep Power: 10
sven82 is on a distinguished road
Hi Foamers,

at the moment I will simulate a cylinder channel of a engine.
The problem is that I will calculate the swirl and tumble number of rectangle space in the cylinder. in Cfx I try something like this

switch = step( (0 [mm] - z ) / 1 [m] ) * step( ( 70 [mm] + z ) / 1[m] ) * step( ( 33 [mm] - y ) / 1[m]) * step( ( 33[mm] - x ) / 1[m])

Dy = switch * Density * ((z + 35 [mm])*Velocity u - x *Velocity w )
Jy = switch * Density * (x ^2 + (z+ 35 [mm])^2)

omega_Y = volumeInt(DY)@A1/ volumeInt(JY)@A1

t = omega_Y*areaAve(Density)@O*Diam^3*pi^2/4/ph

But I got no idea how this work in OpenFOAM, especially the "switch" area for the calculation to bound. i hope anyone got a idea for my proceed!

sven82 is offline   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
Mesh Refinement Luiz Eduardo Bittencourt Sampaio (Sampaio) OpenFOAM Mesh Utilities 42 January 8, 2017 13:55
DecomposePar unequal number of shared faces maka OpenFOAM Pre-Processing 6 August 12, 2010 09:01
BlockMeshmergePatchPairs hjasak OpenFOAM Native Meshers: blockMesh 11 August 15, 2008 07:36
Unaligned accesses on IA64 andre OpenFOAM 5 June 23, 2008 10:37
Trimmed cell and embedded refinement mesh conversion issues michele OpenFOAM Other Meshers: ICEM, Star, Ansys, Pointwise, GridPro, Ansa, ... 2 July 15, 2005 04:15

All times are GMT -4. The time now is 07:33.