stem_wire 0.1.3

Wire definition for stem - a Simulation Toolbox for Electric Motors.
Documentation 
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152

use indoc::indoc;
use serde_mosaic::{DatabaseManager, SerdeYaml};
use stem_wire::prelude::*;

fn create_dbm() -> DatabaseManager {
    return DatabaseManager::open("stem_test_database/src", SerdeYaml).expect("must exist");
}

#[test]
fn test_wire_rectangular() {
    {
        let yaml = indoc! {"
        ---
        conductor_material:
            name: Copper
        height: 5.5 mm
        width: 6.7 mm
        insulation_thickness: 0.0 mm
        "};

        let wire = create_dbm()
            .from_str::<RectangularWire, SerdeYaml>(yaml)
            .unwrap();
        assert_eq!(wire.overall_area().get::<square_meter>(), 5.5 * 6.7 * 1e-6);
    }

    {
        // Fails because insulation thickness is negative
        let yaml = indoc! {"
        ---
        conductor_material:
            name: Copper
        height: 5.5 mmm
        width: 6.7 mmm
        insulation_thickness: -1.0 mm
        "};

        assert!(
            create_dbm()
                .from_str::<RectangularWire, SerdeYaml>(yaml)
                .is_err()
        );
    }
}

#[test]
fn test_load_wire_round() {
    // Read from the database
    let yaml = indoc! {"
        outer_diameter: 1 mm
        inner_diameter: 0 mm
        insulation_thickness: 0 mm
        conductor_material:
          name: Copper
        "};

    let wire = create_dbm().from_str::<RoundWire, SerdeYaml>(yaml).unwrap();
    approx::assert_abs_diff_eq!(
        wire.resistance(
            Length::new::<millimeter>(100.0),
            Area::new::<square_meter>(0.0),
            1,
            &[ThermodynamicTemperature::new::<degree_celsius>(120.0).into()]
        )
        .get::<ohm>(),
        0.00316718,
        epsilon = 1e-6
    );
}

#[test]
fn test_deserialize_with_bad_parameters() {
    // Read from the database
    let yaml = indoc! {"
        outer_diameter: 1 mm
        inner_diameter: 2 mm # <== INNER DIAMETER BIGGER THAN OUTER_DIAMETER
        insulation_thickness: 0.0
        material:
          name: Copper
        "};

    assert!(create_dbm().from_str::<RoundWire, SerdeYaml>(yaml).is_err());
}

#[test]
fn test_load_wire_stranded() {
    // Read from the database
    let yaml = indoc! {"
    ---
    - wire:
        RoundWire:
          conductor_material:
            name: Copper
          outer_diameter: 1 mm
          inner_diameter: 0 mm
          insulation_thickness: 0 mm
      number_wires: 1
    - wire:
        RoundWire:
          conductor_material:
            name: Copper
          outer_diameter: 1 mm
          inner_diameter: 0 mm
          insulation_thickness: 0 mm
      number_wires: 2
    "};

    let wire = create_dbm()
        .from_str::<StrandedWire, SerdeYaml>(yaml)
        .unwrap();
    approx::assert_abs_diff_eq!(
        wire.resistance(
            Length::new::<meter>(0.1),
            Area::new::<square_millimeter>(0.0),
            1,
            &[ThermodynamicTemperature::new::<degree_celsius>(120.0).into()]
        )
        .get::<ohm>(),
        0.00316718 / 3.0,
        epsilon = 1e-6
    );

    // ======================================================================

    // Read from the database
    let yaml = indoc! {"
    ---
    - wire:
        RoundWire:
          conductor_material:
            name: Copper
          outer_diameter: 0.63 mm
          inner_diameter: 0 mm
          insulation_thickness: 0.04725 mm
      number_wires: 3
    "};

    let wire = create_dbm()
        .from_str::<StrandedWire, SerdeYaml>(yaml)
        .unwrap();
    approx::assert_abs_diff_eq!(
        wire.resistance(
            Length::new::<meter>(0.1),
            Area::new::<square_millimeter>(0.0),
            1,
            &[ThermodynamicTemperature::new::<degree_celsius>(120.0).into()]
        )
        .get::<ohm>(),
        0.0079798 / 3.0,
        epsilon = 1e-6
    );
}