CFD Online Logo CFD Online URL
Home > Forums > Software User Forums > ANSYS > CFX

Why the streamline passes through blades

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

LinkBack Thread Tools Search this Thread Display Modes
Old   November 10, 2003, 00:42
Default Why the streamline passes through blades
Posts: n/a
Hello friends,

I simulated a baffled mixing tank. Two domains are set up. Central domain containing the blades is rotationary and outer domain containing baffles is stationary. There are six vertical blades revolving at the center of the tank. When I check the results in Post, I found the streamline pass through the blades. I used Thin Surface boundary (Wall) condition for the blades. Since I assigned a velocity for the whole ratotionary domain, the blades should be stationary relative to the rotationary domain. Also, stremline should pass around rather pass through the blades since blades basically are wall. Anybody can give me some suggestion about that?

I am looking forward to your any resonse.



  Reply With Quote

Old   November 10, 2003, 16:18
Default Re: Why the streamline passes through blades
Glenn Horrocks
Posts: n/a
Hi Jeniffer,

In CFX-Post, have a look at the properties of the streamline. Under the limits tab there are a number of options for controlling how the streamline is integrated. A possible cause for your problem is that the default integration tolerances are too coarse. Try reducing the integration tolerance.

Note that it will take longer to calculate the streamline when you do this, so don't go overboard and make it rediculously fine, especially if you are calculating streamlines on a large simulation.

  Reply With Quote

Old   November 18, 2003, 01:25
Default Re: Why the streamline passes through blades
Posts: n/a
Hi, Glenn Horrcks,

Thank you for your kind response. I set the integration limit to 0.00001 and the problem still is there.

Could you please give me more suggestions?


  Reply With Quote


Thread Tools Search this Thread
Search this Thread:

Advanced Search
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 Off
Pingbacks are On
Refbacks are On

Similar Threads
Thread Thread Starter Forum Replies Last Post
streamline plot for multiphase problem lionlove0903 OpenFOAM Post-Processing 2 March 14, 2011 15:25
How to model intersecting blades in turbogrid Adam1181 ANSYS Meshing & Geometry 1 May 17, 2010 09:24
helicopter blades cfd-star Main CFD Forum 1 May 23, 2004 14:24
helicopter blades cfd-star FLUENT 0 May 21, 2004 06:06
Streamline diffusion Hong Main CFD Forum 0 May 18, 2000 08:10

All times are GMT -4. The time now is 17:59.