|September 9, 2010, 11:25||
Temperature dependent on air properties
Join Date: Jul 2010
Posts: 2Rep Power: 0
I am working on natural convection on a vertical heated plate. I set the plate temperature high (~700 K), so it seems that the flow over the plate is turbulent flow. These are my questions:
1. Most of properties for Air 25 C have constant value. Is there the built-in properties of the air depending on temperature?
2. What value of y+ should I use in meshing procedure for simulating the viscous sublayer?
Please give me suggestions. Thank you in advance!
|September 9, 2010, 18:52||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,823Rep Power: 85
1) No. You will have to define it yourself.
2) You need to do a sensitivity study to establish this. Are you sure you need to model the sublayer? You might be turbulent enough that wall functions are OK and then meshing is much easier.
|Thread||Thread Starter||Forum||Replies||Last Post|
|Problem with zeroGradient wall BC for temperature - Total temperature loss||cboss||OpenFOAM||10||March 5, 2015 07:57|
|Temperature dependent thermal property in CFX||Subhadeep||CFX||5||March 22, 2012 02:52|
|air properties - heat expansion?||phsieh2005||Main CFD Forum||1||November 25, 2007 10:17|
|Kinetic air props model - conductivity HALF?||Chris Bailey||FLUENT||1||March 7, 2006 11:38|
|AIR molecular properties||Julie Polyakh||CD-adapco||3||January 5, 2002 17:25|