Condensable Atmosphere
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SatPrB corresponds to the Clausius-Clapeyron coeffcient 'b'. | SatPrB corresponds to the Clausius-Clapeyron coeffcient 'b'. | ||
| − | Values for CO2 are a = 27.9546 and b = 3182.48 . | + | Values for CO2 are a = 27.9546 and b = 3182.48 (Provided by HHK, most likely from the Mars book). |
| + | Values for N2 are a = 9.2338 and b = -724.9720 (Derived by SP using this table: [[File:Clausius_Clapeyron.xls]] | ||
The proper molecular weight should be input AMW. The Mass-fraction of mean atmosphere that is non-condensing should also be specified with FANON. | The proper molecular weight should be input AMW. The Mass-fraction of mean atmosphere that is non-condensing should also be specified with FANON. | ||
Revision as of 09:56, 15 January 2019
Contents |
Condensable Atmosphere
The coefficients for the saturation temperature relation for the condensing gas are now input parameters. KRC uses the Clausius-Clapeyron relation:
- ln P = a - b/T
where P is pressure in Pascal and T is temperature in Kelvin.
This should be useful for Mars, Titan, Pluto etc.
SatPrA correspond to the Clausius-Clapeyron coefficient 'a'.
SatPrB corresponds to the Clausius-Clapeyron coeffcient 'b'.
Values for CO2 are a = 27.9546 and b = 3182.48 (Provided by HHK, most likely from the Mars book). Values for N2 are a = 9.2338 and b = -724.9720 (Derived by SP using this table: File:Clausius Clapeyron.xls
The proper molecular weight should be input AMW. The Mass-fraction of mean atmosphere that is non-condensing should also be specified with FANON.
Mars
SatPrB = 3182.48 SatPrA = 27.9546 AMW = 43.54 #SP's own calculation FANON = 0.040 #Paul R. Mahaffy, Science 2013 (SAM) KPREF = 1
Pluto
SatPrB = 9.2338 SatPrA = -724.9720 AMW = 27. FANON = 0.1 KPREF = 0
Titan
SatPrB = 9.2338 SatPrA = -724.9720 AMW = 28.8 FANON = 0.016 KPREF = 0
KRC function: KRC_Cond_Gas()
