uom/si/
dynamic_viscosity.rs

1//! Dynamic viscosity (base unit pascal second, kg · m⁻¹ · s⁻¹).
2
3quantity! {
4    /// Dynamic viscosity (base unit pascal second, kg · m⁻¹ · s⁻¹).
5    quantity: DynamicViscosity; "dynamic viscosity";
6    /// Dimension of dynamic viscosity, L⁻¹MT⁻¹ (base unit pascal second, kg · m⁻¹ · s⁻¹).
7    dimension: ISQ<
8        N1,     // length
9        P1,     // mass
10        N1,     // time
11        Z0,     // electric current
12        Z0,     // thermodynamic temperature
13        Z0,     // amount of substance
14        Z0>;    // luminous intensity
15    units {
16        @pascal_second: prefix!(none); "Pa · s", "pascal second", "pascal seconds";
17        @millipascal_second: prefix!(milli); "mPa · s", "millipascal second", "millipascal seconds";
18        @micropascal_second: prefix!(micro); "µPa · s", "micropascal second", "micropascal seconds";
19        // poise = 0.1 Pa · s
20        @poise: 1.0_E-1; "P", "poise", "poises";
21        // centipoise = 1 mPa · s
22        @centipoise: prefix!(centi) * 1.0_E-1; "cP", "centipoise", "centipoises";
23        @pound_force_second_per_square_foot: 4.448_222_E0 / 3.048_E-1 / 3.048_E-1; "lbf · s/ft²",
24            "pound-force second per square foot", "pound-force seconds per square foot";
25        @pound_force_second_per_square_inch: 4.448_222_E0 / 2.54_E-2 / 2.54_E-2; "lbf · s/in²",
26            "pound-force second per square inch", "pound-force seconds per square inch";
27        // Reyn = 1 lbf · s/in²
28        @reyn: 4.448_222_E0 / 2.54_E-2 / 2.54_E-2; "reyn", "reyn", "reyns";
29        @pound_per_foot_second: 4.535_924_E-1 / 3.048_E-1; "lb/(ft · s)", "pound per foot second",
30            "pounds per foot second";
31        @pound_per_foot_hour: 4.535_924_E-1 / 3.048_E-1 / 3.6_E3; "lb/(ft · h)",
32            "pound per foot hour", "pounds per foot hour";
33        @slug_per_foot_second: 1.459_390_E1 / 3.048_E-1; "slug/(ft · s)", "slug per foot second",
34            "slugs per foot second";
35        @gram_per_centimeter_second: prefix!(milli) / prefix!(centi); "g/(cm · s)",
36            "gram per centimeter second", "grams per centimeter second";
37    }
38}
39
40#[cfg(test)]
41mod test {
42    storage_types! {
43        use crate::num::One;
44        use crate::si::quantities::*;
45        use crate::si::dynamic_viscosity as dv;
46        use crate::si::time as t;
47        use crate::si::mass as m;
48        use crate::si::length as l;
49        use crate::si::pressure as p;
50        use crate::tests::Test;
51
52        #[test]
53        fn check_dimension() {
54            let _: DynamicViscosity<V> = Pressure::new::<p::pascal>(V::one())
55                * Time::new::<t::second>(V::one());
56        }
57
58        #[test]
59        fn check_units() {
60            test::<p::pascal, t::second, dv::pascal_second>();
61            test::<p::millipascal, t::second, dv::millipascal_second>();
62            test::<p::micropascal, t::second, dv::micropascal_second>();
63            test::<p::dyne_per_square_centimeter, t::second, dv::poise>();
64            test::<p::millipascal, t::second,dv::centipoise>();
65            test::<p::pound_force_per_square_foot, t::second,
66                dv::pound_force_second_per_square_foot>();
67            test::<p::pound_force_per_square_inch, t::second,
68                dv::pound_force_second_per_square_inch>();
69            test::<p::pound_force_per_square_inch, t::second, dv::reyn>();
70
71            fn test<P: p::Conversion<V>, T: t::Conversion<V>, DV: dv::Conversion<V>>() {
72                Test::assert_approx_eq(&DynamicViscosity::new::<DV>(V::one()),
73                    &(Pressure::new::<P>(V::one())
74                        * Time::new::<T>(V::one())));
75            }
76        }
77
78        #[test]
79        fn check_units_mlt() {
80            test::<m::pound, l::foot, t::second, dv::pound_per_foot_second>();
81            test::<m::pound, l::foot, t::hour, dv::pound_per_foot_hour>();
82            test::<m::gram, l::centimeter, t::second, dv::gram_per_centimeter_second>();
83            test::<m::slug, l::foot, t::second, dv::slug_per_foot_second>();
84
85            fn test<M: m::Conversion<V>, L: l::Conversion<V>, T: t::Conversion<V>,
86                DV: dv::Conversion<V>>()
87            {
88                Test::assert_approx_eq(&DynamicViscosity::new::<DV>(V::one()),
89                    &(Mass::new::<M>(V::one())
90                        / Length::new::<L>(V::one())
91                        / Time::new::<T>(V::one())));
92            }
93        }
94    }
95}
uom/si/dynamic_viscosity.rs

uom/si/
dynamic_viscosity.rs
