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--- userfunctions:iceproperties [2018/10/28 14:24]
tzwinger [SIF contents]
+++ userfunctions:iceproperties [2018/11/03 12:14]
tzwinger [General Description]
@@ Line 6: / Line 6: @@
 ==== General Description ====
-The aim of these user functions is to provide a Fortran version of the else as [[tips:thermoprop|MATC functions]] prescribed material parameters for ice (except for viscosity, which is handled by Glen's flow law). Fortran functions are way faster in execution time, which, in a run that repeatedly calls those parameters, can lead to tremendous speed-ups. Hence, if computing thermo-mechanically coupled problems.
+The aim of these user functions is to provide a Fortran version of the else as [[tips:thermoprop|MATC functions]] prescribed material parameters for ice (except for viscosity, which is handled by Glen's flow law). Fortran functions are way faster in execution time, which, in a run that repeatedly calls those parameters, can lead to tremendous speed-ups. Hence, if computing thermo-mechanically coupled problems, rather stick to those.
+All input is expected to be in SI units (Temperature in Kelvin). All outputs by default are in SI units, except the user provides scaling factors (see below).
 ===IceConductivity===
@@ Line 18: / Line 20: @@
  <m>c = 146.3 + (7.253 . T) [J kg^{−1} K^{−1}]</m>\\
-===GetIcePressureMeltingPoint===
+===IcePressureMeltingPoint===
 The pressure melting point of ice as a function of pressure (<m>p</m>) is defined as (in Kelvin):\\
  <m>T_{pmp} = 273.15 - C_{cc} . max(p, 0) [K]</m>\\
-where <m>C_{cc}</m> is the Clausius Clapeyron constant. In case of negative ice pressures, the function uses zero value.
+where <m>C_{cc}</m> is the Clausius Clapeyron constant. In case of negative ice pressures (actually, any below atmospheric pressures), the function uses the reference value at atmospheric pressure.

userfunctions/iceproperties.txt · Last modified: 2018/11/03 12:14 by tzwinger

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