mechanical_engineering/
constants.rs

1pub mod gas {
2    use crate::units::pressure::{self, Pressure};
3    use crate::units::temperature::{self, Temperature};
4    use ratatui::text::Text;
5
6    /// Ideal gas constant
7    const IDEAL_GAS_CONST: f32 = 8.314_463;
8
9    pub fn gas_list() -> Vec<Gas> {
10        vec![AIR, ARGON, NITROGEN]
11    }
12
13    /// Properties of a gas
14    pub struct Gas {
15        pub name: &'static str,
16        pub chemical_formula: &'static str,
17        pub specific_heat_cp: f32,
18        pub specific_heat_cv: f32,
19        pub standard_density: f32,
20        pub molar_mass: f32,
21    }
22
23    impl Gas {
24        pub fn density(&self, temperature: Temperature, pressure: Pressure) -> f32 {
25            let ref_pressure = 100.0; // kPa
26            let ref_temperature = 273.15; // K
27
28            let mut temperature = temperature.clone();
29            temperature.convert_unit(temperature::Unit::K);
30            let mut pressure = pressure.clone();
31            pressure.convert_unit(pressure::Unit::Kpa);
32            self.standard_density * pressure.value() / ref_pressure * ref_temperature
33                / temperature.value()
34        }
35
36        pub fn name(&self) -> &'static str {
37            self.name
38        }
39
40        pub fn formula(&self) -> &'static str {
41            self.chemical_formula
42        }
43
44        pub fn specific_heat_cp(&self) -> f32 {
45            self.specific_heat_cp
46        }
47
48        pub fn specific_heat_cv(&self) -> f32 {
49            self.specific_heat_cv
50        }
51
52        pub fn specific_heat_ratio(&self) -> f32 {
53            self.specific_heat_cp / self.specific_heat_cv
54        }
55
56        pub fn standard_density(&self) -> String {
57            self.standard_density.to_string()
58        }
59
60        pub fn molar_mass(&self) -> f32 {
61            self.molar_mass
62        }
63    }
64
65    impl<'a> Into<Text<'a>> for Gas {
66        fn into(self) -> Text<'a> {
67            let name = ratatui::text::Line::from(self.name);
68            let lines = vec![name];
69            Text { lines }
70        }
71    }
72
73    pub const AIR: Gas = Gas {
74        name: "Air",
75        chemical_formula: "",
76        specific_heat_cp: 1.005,
77        specific_heat_cv: 0.7164,
78        standard_density: 1.293, // kg/m^3 @ 0C / 101.325 kPa (1 atm)
79        molar_mass: 28.9647,
80    };
81
82    pub const ARGON: Gas = Gas {
83        name: "Argon",
84        chemical_formula: "Ar",
85        specific_heat_cp: 0.520,
86        specific_heat_cv: 0.312,
87        standard_density: 1.7837, // kg/m^3 @ 0C / 101.325 kPa (1 atm)
88        molar_mass: 39.948,
89    };
90
91    pub const NITROGEN: Gas = Gas {
92        name: "Nitrogen",
93        chemical_formula: "N2",
94        specific_heat_cp: 1.04,
95        specific_heat_cv: 0.743,
96        standard_density: 1.2506, // kg/m^3 @ 0C / 101.325 kPa (1 atm)
97        molar_mass: 28.013,
98    };
99}
100
101pub mod fluid {
102    pub mod specific_heat {}
103}
mechanical_engineering/constants.rs

mechanical_engineering/
constants.rs
