jonnydyer / pypropep Goto Github PK

Ugly now:

Status:
Equillibrium Computed: False
Properties Computed: False
Performance Computed: False
Composition:
METHANE - 1.000 mol
OXYGEN (LIQUID) - 1.000 mol
======= Chamber =======:
Pressure: 10.000 atm
Temperature: 2549.8 K
Enthalpy: -2047.491 kJ/kg
Int. Energy: -3376.014 kJ/kg
Gibbs Free Energy: -39958.401 kJ/kg
Entropy: 14.868 kJ/kg-K
Molar Mass: 15.958 g/mol
dV_P: -1.000
dV_T: 1.000
Cp: 2.675 kJ/kg-K
Cv: 2.154 kJ/kg-K
gamma: 1.242
Sound Speed: 1270.2 m/s

Ae/At: 0.00000
A/dotm: 0.00000 m/s/atm
C*: 0.00000 m/s
Cf: 0.00000
Ivac (m/s): 0.00000
Isp (m/s): 0.00000
Isp/g (s): 0.00000

======= Throat =======:
Pressure: 5.552 atm
Temperature: 2271.2 K
Enthalpy: -2785.802 kJ/kg
Int. Energy: -3969.178 kJ/kg
Gibbs Free Energy: -35858.463 kJ/kg
Entropy: 14.562 kJ/kg-K
Molar Mass: 15.958 g/mol
dV_P: -1.000
dV_T: 1.000
Cp: 2.623 kJ/kg-K
Cv: 2.102 kJ/kg-K
gamma: 1.248
Sound Speed: 1215.2 m/s

Ae/At: 1.00000
A/dotm: 175.39810 m/s/atm
C*: 1753.98100 m/s
Cf: 0.69281
Ivac (m/s): 2189.00591
Isp (m/s): 1215.17275
Isp/g (s): 123.91314

======= Exit =======:
Pressure: 0.010 atm
Temperature: 533.4 K
Enthalpy: -6870.379 kJ/kg
Int. Energy: -7148.318 kJ/kg
Gibbs Free Energy: -14801.680 kJ/kg
Entropy: 14.868 kJ/kg-K
Molar Mass: 15.958 g/mol
dV_P: -1.000
dV_T: 1.000
Cp: 1.999 kJ/kg-K
Cv: 1.478 kJ/kg-K
gamma: 1.353
Sound Speed: 587.5 m/s

Ae/At: 51.02182
A/dotm: 8949.12950 m/s/atm
C*: 1753.98100 m/s
Cf: 1.77069
Ivac (m/s): 3195.25638
Isp (m/s): 3105.76509
Isp/g (s): 316.69990

The propellant.dat file is a throughback to Fortran days. It would be very nice to build a small python utility to manage entries in it as an interactive database that doesn't require the user to worry about text formatting.

Dear author, the calculated product seems to be a percentage. Can we obtain the total mole number of all products?

Right now it appears cpropep only support infinite contraction ratios despite the SUBSONIC_AREA_RATIO parameter flag. I need to look into this a bit more to confirm.

If it isn't supported, we should add support for finite area contraction computations as defined in Bonny, McBride.

Right now, we do nothing to test for or make available the presence of condensed phases