# plz help:"outflow" BC problem

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

 June 12, 2008, 10:04 plz help:"outflow" BC problem #1 subhransu Guest   Posts: n/a hello, Am trying to find the HTCs in circular jet impingement cooling of air on a metal plate. The inlet is thru a nozzle of dia 1" and the outflow is thru the curved area of cylinder dia 10" and height 2". The outlet boundry condn is "OUTFLOW". It's creating a lot of convergence issues bcoz there is back flow, actually there is recirculation, is the reverse flow because of that, will it be solved if i increase my domain. _____________________| ! |_______________________ <----.................................................. .................................-------> _______________________________________________ <--the cooled plate Another q is that can i use two symetric BC to model a circular section of 30 deg like this" <)" hope you got it

 June 12, 2008, 17:12 Re: plz help:"outflow" BC problem #2 red lemon Guest   Posts: n/a Move outlets further away to capture recirculation and use stagnation pressure (pressure outlet) condition instead. On second point you can use rotational periodics for that. Both flat faces represent the periodic zone and these can be conformal or non conformal in fluent. If you can guarantee (big if!) that flow is axial then don't use periodic sector with symmetries as you can model as 2D axi-symmetric as it will solve quicker. Otherwise use the 3D periodic approach described. This latter option may be the safer one.

 Thread Tools Display Modes Linear Mode

 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 OffTrackbacks are On Pingbacks are On Refbacks are On Forum Rules

 Similar Threads Thread Thread Starter Forum Replies Last Post kk FLUENT 1 April 12, 2007 10:55 ramp FLUENT 1 May 10, 2006 04:26 ramesh Siemens 1 January 9, 2006 02:12 Julie Polyakh Siemens 1 January 27, 2002 10:30 Niklas FLUENT 2 December 25, 2001 12:42

All times are GMT -4. The time now is 20:04.