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

 June 7, 2009, 23:56 How to define size of domain for free surface simulation? #1 New Member   Sarunya Join Date: Jun 2009 Posts: 2 Rep Power: 0 Sponsored Links This work studies flow behavior of pollen around papaya flower. But I don't know the suitable size of domain to simulate it. The size of domain should be how many time of flower size? Or in the other case like flow around some object, how large the domain should bigger than the object? Thank you in advance.

 June 8, 2009, 08:58 #2 Member     Join Date: Mar 2009 Posts: 72 Rep Power: 10 It depends on the flow conditions on your boundaries. You do not state what you are investigating. Is it the transport of pollen to the flower or is it the transport of pollen away from the flower? Assuming that it is the first then you need to have a domain that is large enough so that you capture the wake behind the flower, where some pollen (that missed the flower) might recirculate and impact on the flower in a later stage. What Reynolds number do you have? __________________ "Trying is the first step to failure." - Homer Simpson

 June 8, 2009, 23:33 #3 New Member   Sarunya Join Date: Jun 2009 Posts: 2 Rep Power: 0 The pollen flow to the flower. Reynold's number = 900 when wind speed = 1m/s and 21000 when wind speed = 22 m/s (Maximum velocity as possible). Size of flower is about 1.5-5.0 cm.

 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 Ashi Fluent UDF and Scheme Programming 0 May 25, 2009 09:39 edi FLUENT 2 February 23, 2006 09:48 Paul FLUENT 2 October 11, 2003 16:34 Derek Jing Main CFD Forum 3 June 6, 2002 20:21 Greg Perkins FLUENT 0 October 11, 2000 03:43