|April 30, 2013, 14:43||
Radiation Properties of MultiComponents
Join Date: Nov 2011
Posts: 10Rep Power: 5
I write to ask about the configuration of the radiation properties of a reactive mixture. I'm modeling internal flow combustion in a boiler, after selecting the turbulence model and define the emissivity of the walls, the program gives me this warning:
"In Analysis 'Flow Analysis 1' - Domain 'Default Domain': Radiation properties for the Mixtures 'reaction mixture' will be based on a mass weighted average of the constitutive components, Unless overridden with explicit Mixture Property settings."
Reading the CFX help I found that by default the program calculates the radiation properties through a weighted sum of its components, which computationally is not recommended (my simulation has 10 components).
I wonder who could give me recommendation to avoid this problem, or how to calculate these properties.
|April 30, 2013, 19:39||
Join Date: Mar 2009
Location: Sydney, Australia
Posts: 10,949Rep Power: 85
Unless you have a better model of what the mixture properties are then why not just accept the default?
|May 1, 2013, 22:19||
Join Date: Feb 2011
Location: Earth (Land portion)
Posts: 487Rep Power: 10
Right, I don't see why that would make it that much more computationally expensive. taking the average of 10 values is not hard far a computer to do considering all the other calculations its performing.
It has to do this for every other material property anyways, so whats the big deal?
|cfx, mixture, multicomponents, properties, radiation|
|Thread||Thread Starter||Forum||Replies||Last Post|
|Modeling both radiation and convection on surfaces - Ansys Transient Thermal R13||s.mishra||ANSYS||0||March 31, 2012 04:12|
|error message||cuteapathy||CFX||14||March 20, 2012 07:45|
|Constant velocity of the material||Sas||CFX||15||July 13, 2010 08:56|
|Multiphase radiation in CFX||Luk_Fiz||CFX||5||March 17, 2009 04:51|
|Two-Phase Buoyant Flow Issue||Miguel Baritto||CFX||4||August 31, 2006 12:02|