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-   -   Thermal radiation thru single and double glazing (http://www.cfd-online.com/Forums/fluent/100323-thermal-radiation-thru-single-double-glazing.html)

BIMSON2K April 24, 2012 02:17

Thermal radiation thru single and double glazing
 
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Dear Ansys-Fluent Users,
Pls,i am currently working on thermal radiation thru single and double glass.I have been doing this for sometime now but everything seems not to be working fine.Though,i have gone through some of the tutorials made available by the ANSYS but something seems not to be right somewhere.

Pls,can you help to check the attached case file(Single glass) to see if my boundaries and the values assigned are okay,as i am not obtaining good results while doing the post-processing.

Model:Radiation(Discrete Ordinate-Non Gray Model with 2 bands)

++++++++For the outside air boundary,i used the formular recommended by the Ansys-(E*Stefan boltmans constant*T^4)/Pie where i used T=293K
with Emmsivity of 1,Wall-SEMI TRANSPARENT and Diffuse Fraction of 0.

++++++++For the the inside room boundary,i have used 285k as the temperature with internal emmisivity of 0.86, Wall-Opaque and Diffuse Fraction of 0.

++++++++For the glassouter and glassinner (Including the shadows),i have used Wall-Semi Transparent and Diffuse Fraction of 0.

+++++++++ For the Airside 1 & 2(aside),i have used Wall-Opaque, Internal Emmisivity of 0.86 and Diffuse Fraction of 0.

+++++++++For the glass sides,,i have used Wall-Opaque, Internal Emmisivity of 0.86 and Diffuse Fraction of 0.



Pls can you help to check this and get back to me.Thanks.

Long life CFd users,long life CFD online

Akeem


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