Struct DiffusionTensor 

pub struct DiffusionTensor {
    pub d: [[f64; 3]; 3],
}

Anisotropic diffusion tensor [m²/s] for a material.

Fields

d: [[f64; 3]; 3]

3×3 diffusion matrix D.

Implementations

impl DiffusionTensor

pub fn new(d: [[f64; 3]; 3]) -> Self

Create from a full 3×3 matrix.

pub fn orthotropic(dx: f64, dy: f64, dz: f64) -> Self

Create an orthotropic (diagonal) diffusion tensor.

pub fn diffusive_flux(&self, grad_c: [f64; 3]) -> [f64; 3]

Compute the diffusive flux vector J = -D · ∇c.

pub fn msd_along(&self, n: [f64; 3], t: f64) -> f64

Mean-square displacement in direction n after time t.

MSD = 2 * D_eff * t, where D_eff = nᵀ D n.

pub fn mean_diffusivity(&self) -> f64

Average isotropic diffusivity: (Dxx + Dyy + Dzz) / 3.

Trait Implementations

impl Clone for DiffusionTensor

fn clone(&self) -> DiffusionTensor

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for DiffusionTensor

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

Formats the value using the given formatter.

impl Copy for DiffusionTensor