[CIG-LONG] Question on scaling

[Patrice Rey]

Hi Brian

My understanding is that in the energy equation the radiogenic heat production is in Kelvin per seconds per kilogram.

Example.  
Heat production: 1e-6 W/m-3
Density: 2700 kg.m-3, 
Heat Capacity: 1000 J/K becomes: 

Heat production in Kelvin per seconds per Kilogram:  (1e-6)/(2700*1000) = 3.7e-13 K/s/kg

Then you multiply this by the scaling factor of radiogenic heat production (mass/length/time^3) to get the scaled value.

Cheers


Patrice
On 26/01/2011, at 12:46 PM, Brian Wilson wrote:

> Hello,
> 
> I'm having some problems with the scaling in GALE, which is causing problems with convergence. The worst problem seems to be the scaling of crustal heat production. Since this quantity involves Watts, seconds^3 appears in the denominator. Thus, scaling seconds up to millions of years creates huge numbers that are something like 10^60, even with a small offset from scaling kg up to a larger denomination. Has anyone else had this problem?
> 
> Thanks,
> Brian
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Associate Professor Patrice F. Rey
EarthByte Research Group
School of Geosciences
The University of Sydney
+61 2 9351 2067
patrice.rey at mac.com
patrice.rey at sydney.edu.au