CFD Online Logo CFD Online URL
Home > Forums > FLUENT

Labyrinth Seal (Axisymetric swirl flow)

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

LinkBack Thread Tools Display Modes
Old   November 9, 2009, 21:42
Default Labyrinth Seal (Axisymetric swirl flow)
New Member
Sangkwon Na
Join Date: Nov 2009
Posts: 1
Rep Power: 0
nasa0402 is on a distinguished road
Hi everyone,

I'm trying to solve sudden constricted channel flow with air, whose height and pressure differences are 0.15 mm and 5 to 3~10 bar for the general labyrinth seal. The diameter of a rotating shaft is 400mm and its speed is about 30000 rpm.

I applied pressure based 2D Axisymetric swirl to this problem and it converged very well up to about dp 1 bar between the inlet and exit. But, it does not work any more as dp inceases over 1.5 bar even with density based solution. I understand that flow would be chocked and has highly increased Mach number and has lots of discontiuity at throat (or constricted channel) in physics, and it causes the problem diverged directly.

Please advice me how to sep up the modeling and any tutorials related.
nasa0402 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
flow patterening of axisymetric impinging jet sachin kulkarni Main CFD Forum 1 February 25, 2006 17:14
Can 'shock waves' occur in viscous fluid flows? diaw Main CFD Forum 104 February 16, 2006 06:44
swirl flow, B.C. for exit? victor FLUENT 1 December 11, 2001 02:46
Question on 3D potential flow Adrin Gharakhani Main CFD Forum 13 June 21, 1999 05:18
computation about flow around a yawed cone Tylor Xie Main CFD Forum 0 June 9, 1999 07:33

All times are GMT -4. The time now is 13:24.