CFD Online Logo CFD Online URL
Home > Forums > FLUENT

NEED HELP with Turbulant and laminar flow modeling

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

LinkBack Thread Tools Display Modes
Old   November 2, 2006, 08:39
Default NEED HELP with Turbulant and laminar flow modeling
Posts: n/a
Good morning everyone,

I am trying to model a system that cools a hot fluid by circulating air. However, I am not sure how to model both turbulance and laminar model together in one? Any suggestion?

Thank you very much. Muluwork G.
  Reply With Quote

Old   November 3, 2006, 03:20
Default Re: NEED HELP with Turbulant and laminar flow mode
Posts: n/a
If the two fluids are circulating in separate areas (like in a radiator or heat exchanger), then your problem is easy: simply define separate "fluid" zones in Gambit for the two fluid areas, and in Fluent, in "Boundary Conditions" GUI panel, check "Laminar Zone" option for the fluid zone that you need to be laminar. But all this is valid if there is a wall separating the two zones, the fluids do not come in contact to each other directly. If the fluids intimately mix, then I don't know how you could clearly separate the fluid regions to be able to use this "trick".

This option is actally intended for fixating laminar-to-turbulent transition point/line on an airfoil/aerodynamic body, etc.

Are you sure that the flow is laminar in a certain area?

  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
Suction modeling hamid1 FLUENT 3 January 5, 2011 02:52
Turbulant airflow behind 2D airfoil Adam CFX 8 January 24, 2008 20:14
Laminer and turbulant airfoil flow M. Essuri FLUENT 3 November 3, 2006 15:14

All times are GMT -4. The time now is 22:33.