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atmos touchups: thermodynamics enforcement week (#6790)
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| Original file line number | Diff line number | Diff line change |
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| //* Heat Capacity Entity Definitions *// | ||
| //* These are all in J / K. *// | ||
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| //* Thermodynamics - Constants *// | ||
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| /** | ||
| * Constant used as absolute zero. | ||
| * | ||
| * * Why the hell is this conflicting with COSMIC_RADIATION_TEMPERATURE? | ||
| * * This is basically the absolute zero of simulation. Gas cannot / should not get colder than this, ever. | ||
| * * This is -270.3C. | ||
| * * Please get this a better name. | ||
| */ | ||
| #define TCMB 2.7 | ||
| /** | ||
| * * Constant used for calculating blackbody radiation emittance. | ||
| * * Unit is W / (m^2 * K^4) | ||
| */ | ||
| #define STEFAN_BOLTZMANN_CONSTANT 5.6704e-8 | ||
| /** | ||
| * Temperature of cosmic microwave background radiation used for radiative space cooling. | ||
| * | ||
| * * This is above TCMB. Why? | ||
| */ | ||
| #define COSMIC_RADIATION_TEMPERATURE 3.15 | ||
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| //* Thermodynamics - Radiation *// | ||
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| // todo: all of these below are semi-confusing. is there a better way? | ||
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| /** | ||
| * * kPa at 20C | ||
| * * This should realistically be higher as gases aren't great conductors until they are dense. | ||
| * * Uses the critical pressure for air. | ||
| */ | ||
| #define THERMODYNAMICS_OPTIMAL_RADIATOR_PRESSURE 3771 | ||
| /** | ||
| * The critical point temperature for air. | ||
| * | ||
| * * This is where standard airmix's liquid / gas / supercritical phases meet. | ||
| */ | ||
| #define THERMODYANMICS_CRITICAL_TEMPERATURE_OF_AIR 132.65 | ||
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| /** | ||
| * Ratio of surface area exposed to theroetical star for radiative heating while in space. | ||
| * | ||
| * todo: wouldn't it be funny if this was based on overmap entity :drooling: | ||
| */ | ||
| #define THERMODYNAMICS_THEORETICAL_STAR_EXPOSURE_RATIO (1 / 4) | ||
| /** | ||
| * W / m^2 energy hitting external surfaces from a theoretical star. | ||
| * | ||
| * todo: wouldn't it be funny if this was based on overmap entity :drooling: | ||
| */ | ||
| #define THERMODYNAMICS_THEORETICAL_STAR_EXPOSED_POWER_DENSITY 200 | ||
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| /// m^2, surface area of 1.7m (H) x 0.46m (D) cylinder | ||
| #define THERMODYNAMICS_HUMAN_EXPOSED_SURFACE_AREA 5.2 |
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|---|---|---|
| @@ -1,15 +1,34 @@ | ||
| //* Physics Constants *// | ||
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| /// in Kelvin, temperature of cosmic microwave background radiation (used for radiative space cooling) | ||
| #define COSMIC_RADIATION_TEMPERATURE 3.15 | ||
| /// kPa*L/(K*mol). | ||
| #define R_IDEAL_GAS_EQUATION 8.31 | ||
| /// W/(m^2*K^4). | ||
| #define STEFAN_BOLTZMANN_CONSTANT 5.6704e-8 | ||
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| //* Simulation Constants *// | ||
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| /// Volume, in liters, of a single tile. Y'KNOW WHY THIS IS A CONSTANT? WELL FOR ONE, initial_gas_mix IS MOLES, NOT PERCENTAGES OR PRESSURES. IF YOU TOUCH THIS, YOU BREAK *EVERYTHING*. DON'T TOUCH THIS. | ||
| /// Exceptions can be made if you're a big boy who knows how this clusterfuck of a ZAS/LINDA hybrid works and have good reason to touch this. | ||
| #define CELL_VOLUME 2500 | ||
| /// Moles in a 2.5 m^3 cell at 101.325 kPa and 20 C. | ||
| #define CELL_MOLES (ONE_ATMOSPHERE*CELL_VOLUME/(T20C*R_IDEAL_GAS_EQUATION)) | ||
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| //* Gas Constants *// | ||
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| /// kPa*L/(K*mol). | ||
| #define R_IDEAL_GAS_EQUATION 8.31 | ||
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| //* Math Helpers - Pressures *// | ||
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| /// 1atm of earth-standard pressure, in kPa | ||
| #define ONE_ATMOSPHERE 101.325 | ||
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| //* Math Helpers - Temperatures *// | ||
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| // todo: T_0C? | ||
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| /** | ||
| * -60C in Kelvin | ||
| * | ||
| * * Please get this a better name. T_NEG_60C? | ||
| */ | ||
| #define TN60C 213.15 | ||
| /// 0 deg C, in Kelvin | ||
| #define T0C 273.15 | ||
| /// 20 deg C, in Kelvin | ||
| #define T20C 293.15 | ||
| /// 100 deg C, in Kelvin | ||
| #define T100C 373.15 |
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| @@ -1,9 +1,26 @@ | ||
| //! helpers for if we end up doing auxmos | ||
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| #define GAS_MIXTURE_VOLUME(GM) (GM.volume * GM.group_multiplier) | ||
| #define GAS_MIXTURE_VOLUME_SINGULAR(GM) (GM.volume) | ||
| #define GAS_MIXTURE_PRESSURE(GM) (GM.return_pressure()) | ||
| #define GAS_MIXTURE_TEMPERATURE(GM) (GM.temperature) | ||
| #define GAS_MIXTURE_TOTAL_MOLES(GM) (GM.total_moles * GM.group_multiplier) | ||
| #define GAS_MIXTURE_TOTAL_MOLES_SINGULAR(GM) (GM.total_moles) | ||
| #define GAS_MIXTURE_HEAT_CAPACITY(GM) (GM.heat_capacity()) | ||
| //* Helpers, so we're not up a creek if we ever decide to use something like auxmos. *// | ||
| //* -- These are only necessary for things that aren't already proc-calls! -- *// | ||
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| //* group multiplier dependent *// | ||
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| /// Takes group_multiplier into account. | ||
| #define XGM_VOLUME(GM) (GM.volume * GM.group_multiplier) | ||
| /// Does not take group_multiplier into account. | ||
| #define XGM_VOLUME_SINGULAR(GM) (GM.volume) | ||
| /// Takes group_multiplier into account. | ||
| #define XGM_TOTAL_MOLES(GM) (GM.total_moles * GM.group_multiplier) | ||
| /// Does not take group_multiplier into account. | ||
| #define XGM_TOTAL_MOLES_SINGULAR(GM) (GM.total_moles) | ||
| /// Takes group_multiplier into account. | ||
| /// | ||
| /// * In Joules | ||
| #define XGM_THERMAL_ENERGY(GM) (GM.heat_capacity() * GM.temperature) | ||
| /// Does not take group_multiplier into account. | ||
| /// | ||
| /// * In Joules | ||
| #define XGM_THERMAL_ENERGY_SINGULAR(GM) (GM.heat_capacity_singular() * GM.temperature) | ||
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| //* group multiplier independent *// | ||
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| #define XGM_TEMPERATURE(GM) (GM.temperature) | ||
| #define XGM_PRESSURE(GM) ((GM.total_moles * R_IDEAL_GAS_EQUATION * GM.temperature) / GM.volume) |
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| Original file line number | Diff line number | Diff line change |
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| @@ -0,0 +1,11 @@ | ||
| //* General Functions *// | ||
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| /// Atmospherics quantization define. | ||
| #define XGM_QUANTIZE(variable) (round(variable,0.00001))/*I feel the need to document what happens here. Basically this is used to catch most rounding errors, however it's previous value made it so that | ||
| once gases got hot enough, most procedures wouldnt occur due to the fact that the mole counts would get rounded away. Thus, we lowered it a few orders of magnititude */ | ||
| /// floating points are satanic. | ||
| /// | ||
| /// checks if something is close enough to be equivalent. | ||
| /// as of right now, this is within 0.01% of the bigger number. | ||
| /// mostly only used in unit tests. | ||
| #define XGM_MOSTLY_CLOSE_ENOUGH(A, B) (abs(A - B) <= (max(abs(A), abs(B)) * 0.0001)) |
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