# how to set BC of cyclone separator outlet

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

 September 6, 2004, 03:39 how to set BC of cyclone separator outlet #1 Lcw Guest   Posts: n/a In simulation of cyclone separator, the BC of outlet is often defined as "pressure-outlet" or "outflow", which one is best for the case of closed operation? that is, the outlet of cyclone is linked with a centrifugal fan. thanks Lcw

 September 9, 2004, 10:36 Re: how to set BC of cyclone separator outlet #2 fpingqian Guest   Posts: n/a When we don't know the outlet pressure, we can difine it as outflow.

 September 10, 2004, 09:25 Re: how to set BC of cyclone separator outlet #3 Lcw Guest   Posts: n/a If we define outlet as "outflow", the exit pipe of the cyclone model need to be prolonged, in general, how long does we choose the length of exit pipe? supposing cyclone cylinder diameter is 170mm, exit diameter is 85mm. In fact, swirl flow must be 3-dimension, how much error beteen the 3-dimension swirl flow and the developed outflow? thank you!

 October 3, 2004, 08:51 Re: how to set BC of cyclone separator outlet #4 ap Guest   Posts: n/a In my opinion you can get better results and a better convergence behaviour using the pressure outlet boundary condition. Hi ap

 October 5, 2004, 09:41 Re: how to set BC of cyclone separator outlet #5 Lcw Guest   Posts: n/a Thank you for response to my question, Downstream of my model is connected to a centrifugal wind machine, and can not use pressure outlet boundary condition.

 February 22, 2012, 02:40 #6 Member   arjun Join Date: Oct 2011 Location: Tokyo, JAPAN Posts: 66 Rep Power: 8 Hi all, how to define wall boundary conditions. i think it is reflect. and at inlet- velocity inlet at outlet- pressure outlet. but what about DPM tab in Boundary conditions. Trap, escape and reflect. which conditions should i use at inlet and outlet?

 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 H.P.LIU Phoenics 7 July 13, 2010 04:31 steventay CFX 7 May 14, 2010 12:44 rassilon OpenFOAM Installation 2 February 16, 2010 21:54 sachin OpenFOAM Installation 7 January 22, 2008 02:40 shellbell1999 OpenFOAM Installation 9 April 6, 2006 13:29

All times are GMT -4. The time now is 19:19.