Struct LogLawWind 

pub struct LogLawWind { /* private fields */ }

A wind whose speed follows the neutral logarithmic law above ground, from one direction:

V(z) = V_ref ln(z / z₀) / ln(z_ref / z₀),   z = H − H_ground > z₀;   V = 0 for 0 ≤ z ≤ z₀

with roughness length z₀. Sources: MIL-F-8785C §3.7.3.2 (with z_ref = 20 ft), and the neutral surface-layer law V = (u*/κ) ln(z/z₀) of WMO-No. 8 (2023), Vol. I, chapter 5 annex, whose Davenport–Wieringa classes give z₀ = 0.03 m for open grassland. Heights below ground are flagged; see docs/physics/wind.md.

Implementations

impl LogLawWind

pub fn new( reference_speed_m_s: f64, reference_height_agl_m: f64, roughness_length_m: f64, direction_from_rad: f64, ground_msl_m: f64, ) -> Result<Self, AtmosError>

A logarithmic profile through reference_speed_m_s at reference_height_agl_m above a ground at ground_msl_m with roughness length roughness_length_m, blowing from direction_from_rad.

Errors

AtmosError::Domain if the speed is negative, the roughness length is not positive, the reference height is not above the roughness length, or any value is not finite.

pub fn reference_speed_m_s(&self) -> f64

Wind speed at the reference height, m/s.

pub fn reference_height_agl_m(&self) -> f64

Reference height above ground, m.

pub fn roughness_length_m(&self) -> f64

Roughness length z₀, m.

pub fn direction_from_rad(&self) -> f64

Direction the wind blows from, in [0, 2π), rad.

pub fn ground_msl_m(&self) -> f64

Height of the ground above mean sea level, m.

Trait Implementations

impl Clone for LogLawWind

fn clone(&self) -> LogLawWind

Returns a duplicate of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Copy for LogLawWind

impl Debug for LogLawWind

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl<'de> Deserialize<'de> for LogLawWind

fn deserialize<__D>(__deserializer: __D) -> Result<Self, __D::Error>

where __D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer.

impl PartialEq for LogLawWind

fn eq(&self, other: &LogLawWind) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl Serialize for LogLawWind

fn serialize<__S>(&self, __serializer: __S) -> Result<__S::Ok, __S::Error>

where __S: Serializer,

Serialize this value into the given Serde serializer.

impl StructuralPartialEq for LogLawWind

impl Wind for LogLawWind

fn wind(&self, height_msl_m: f64) -> Result<WindSample, AtmosError>

The wind at geometric height height_msl_m above mean sea level.