Struct NavierStokesGpu 

pub struct NavierStokesGpu {
    pub velocity: FluidGpuBuffer,
    pub pressure: FluidGpuBuffer,
    pub density: FluidGpuBuffer,
    pub dx: f64,
    pub viscosity: f64,
}

GPU (CPU mock) Navier-Stokes solver on a 3-D Cartesian grid.

Implements semi-Lagrangian advection, divergence, pressure projection via Jacobi iteration, and curl (vorticity) computation.

Fields

velocity: FluidGpuBuffer

Velocity field — 3 components (u, v, w) per cell.

pressure: FluidGpuBuffer

Pressure field — 1 component per cell.

density: FluidGpuBuffer

Density field — 1 component per cell.

dx: f64

Grid cell size (m).

viscosity: f64

Dynamic viscosity (Pa·s).

Implementations

impl NavierStokesGpu

pub fn new(nx: usize, ny: usize, nz: usize, dx: f64, viscosity: f64) -> Self

Create a new Navier-Stokes solver for a nx × ny × nz grid.

pub fn nx(&self) -> usize

Grid width (cells in x).

pub fn ny(&self) -> usize

Grid height (cells in y).

pub fn nz(&self) -> usize

Grid depth (cells in z).

pub fn advect(&mut self, dt: f64)

Semi-Lagrangian advection kernel (CPU mock).

Traces each cell centre backwards along the velocity field by dt seconds and samples the field using trilinear interpolation.

pub fn divergence(&self) -> Vec<f64>

Compute the divergence field into a flat Vecf64`.

result[z * ny * nx + y * nx + x] = divergence at cell (x, y, z).

pub fn pressure_projection(&mut self, iterations: usize)

Pressure projection: Jacobi iterations to enforce incompressibility.

Runs iterations steps of Jacobi Poisson solve, then subtracts the pressure gradient from the velocity field.

pub fn curl(&self) -> Vec<f64>

Compute the curl (vorticity) field.

Returns a flat buffer of [wx, wy, wz] per cell (3 components).

Trait Implementations

impl Clone for NavierStokesGpu

fn clone(&self) -> NavierStokesGpu

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for NavierStokesGpu

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

Formats the value using the given formatter.