[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [TRNSYS-users] Fwd: RADIATION



Kiki,

It is usefull if you give more info (type numbers for example). But, generally, such 'safety' can be added for numerical stability. This can have to do with differences between reals and integers. 0 can for example be approaximated by an integer equal to -0.0000000000000...0x. If the next component cannot handle such value (for example because of a square of that value) the equation you mention avoids that an imaginary number appears which might have caused instability otherwise.


The other thing in your question ... radiation can be negative. If the thermal flux between a cold and warm surface in visible contact is described... It just depends on your definition...

I hope this solves your question!

Regards,

Leen
----- Original Message ----- From: "kiki siouna" <kiki_siouna@yahoo.com>
To: <trnsys-users@cae.wisc.edu>
Sent: Friday, January 30, 2009 11:36 PM
Subject: [TRNSYS-users] Fwd: RADIATION


Note: forwarded message attached.





Disclaimer: http://www.kuleuven.be/cwis/email_disclaimer.htm