def test_get_mod(self):
gas = Gas(0.4, 0.6, 0)
assert gas.get_mod() == pytest.approx(25, 0.1)
assert gas.get_mod(surf_pressure=0.8) == pytest.approx(27, 0.1)
assert gas.get_mod(1.6) == pytest.approx(30, 0.1)
assert gas.get_mod(1.6, surf_pressure=0.8) == pytest.approx(32, 0.1)
assert gas.get_mod(0.18) == 0
default_value=1000)
gravity = UserInput().getFloatInput(
"Gravitational acceleration (decimal, m/s^2) [9.81]: ",
0,
25,
default_value=9.81)
ppo2 = UserInput().getFloatInput("Max PPO2 (decimal, bar) [1.4]: ",
0,
100,
default_value=1.4)
f_n = 1 - f_o2 - f_he
gas = Gas(f_o2, f_n, f_he)
round_places = 2
mod = gas.get_mod(ppo2=ppo2,
density=density,
surf_pressure=surf_pressure,
gravity=gravity)
print("")
print("MOD at " + str(ppo2) + " bars for " + str(gas))
print("With a surface pressure of " + str(surf_pressure) + " bar")
print("Density of fluid: " + str(density) + " kg/m^3")
print("Gravitational acceleration: " + str(gravity) + " m/s^2")
print("MOD: " + str(round(mod, 2)) + " m")
print("")
if input("Would you like to enter another gas [Y/n]? ") == 'n':
break
f_o2 = UserInput().getFloatInput("Fraction of oxygen (decimal) [0.21]: ",
0.01,
1,
default_value=0.21)
f_he = UserInput().getFloatInput("Fraction of helium (decimal) [0]: ",
0, (1 - f_o2),
default_value=0)
surf_pressure = UserInput().getFloatInput(
"Surface pressure (decimal, bar) [1]: ", 0, 1.1, default_value=1)
f_n = 1 - f_o2 - f_he
gas = Gas(f_o2, f_n, f_he)
fresh_min_od = gas.get_mod(CONST.MIN_PPO2,
CONST.DENSITY_FRESHWATER,
surf_pressure=surf_pressure)
fresh_mod = gas.get_mod(CONST.MAX_PPO2,
CONST.DENSITY_FRESHWATER,
surf_pressure=surf_pressure)
fresh_mod_deco = gas.get_mod(CONST.MAX_PPO2_DECO,
CONST.DENSITY_FRESHWATER,
surf_pressure=surf_pressure)
salt_min_od = gas.get_mod(CONST.MIN_PPO2,
CONST.DENSITY_SALTWATER,
surf_pressure=surf_pressure)
salt_mod = gas.get_mod(CONST.MAX_PPO2,
CONST.DENSITY_SALTWATER,
surf_pressure=surf_pressure)
salt_mod_deco = gas.get_mod(CONST.MAX_PPO2_DECO,
CONST.DENSITY_SALTWATER,