Condensable Atmosphere
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+ | ==Condensable Atmosphere== | ||
− | + | The coe�fficients for the saturation temperature relation for the condensing gas are now input parameters. | |
+ | KRC uses the Clausius-Clapeyron relation: | ||
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− | + | ::ln P = a - b/T | |
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− | + | where P is pressure in Pascal and T is temperature in Kelvin. | |
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− | + | This should be useful for Mars, Titan, Pluto etc. | |
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− | + | SatPrA correspond to the Clausius-Clapeyron coe�fficient 'a'. | |
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− | + | SatPrB corresponds to the Clausius-Clapeyron coe�ffcient 'b'. | |
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− | + | Values for CO2 are a = 27.9546 and b = 3182.48 . | |
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− | + | The proper molecular weight should be input AMW. The Mass-fraction of mean atmosphere that is non-condensing should also be speci�fied with FANON. | |
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− | + | ===Mars=== | |
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+ | SatPrB = 3182.48 | ||
+ | SatPrA = 27.9546 | ||
+ | AMW = 43.54 #SP's own calculation | ||
+ | FANON = 0.040 #Paul R. Mahaffy, Science 2013 (SAM) | ||
+ | KPREF = 1 | ||
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+ | ===Pluto=== | ||
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+ | SatPrB = 9.2338 | ||
+ | SatPrA = -724.9720 | ||
+ | AMW = 27. | ||
+ | FANON = 0.1 | ||
+ | KPREF = 0 | ||
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+ | ===Titan=== | ||
+ | SatPrB = 9.2338 | ||
+ | SatPrA = -724.9720 | ||
+ | AMW = 28.8 | ||
+ | FANON = 0.016 | ||
+ | KPREF = 0 | ||
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+ | KRC function: KRC_Cond_Gas() |
Revision as of 09:51, 15 January 2019
Contents |
Condensable Atmosphere
The coe�fficients 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 coe�fficient 'a'.
SatPrB corresponds to the Clausius-Clapeyron coe�ffcient 'b'.
Values for CO2 are a = 27.9546 and b = 3182.48 .
The proper molecular weight should be input AMW. The Mass-fraction of mean atmosphere that is non-condensing should also be speci�fied 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()