Struct GpuLbmGrid 

pub struct GpuLbmGrid {
    pub nx: usize,
    pub ny: usize,
    pub cells: Vec<LbmCell>,
}

2-D D2Q9 LBM grid (CPU mock of a GPU backend).

Fields

nx: usize

Number of cells in the x-direction.

ny: usize

Number of cells in the y-direction.

cells: Vec<LbmCell>

Flat cell storage: row-major, cells[y * nx + x].

Implementations

impl GpuLbmGrid

pub fn new(nx: usize, ny: usize, rho: f64) -> Self

Construct a new grid initialised to a uniform equilibrium state.

• nx, ny – grid dimensions
• rho – initial density (uniform)

pub fn idx(&self, x: usize, y: usize) -> usize

Linear index for cell (x, y).

pub fn collision_bgk(&mut self, omega: f64)

BGK collision step: compute f_out from current f_in using relaxation parameter omega.

pub fn stream_periodic(&mut self)

Streaming step with periodic boundary conditions.

Each distribution f_out[i] from cell (x, y) is moved to f_in[i] of the neighbouring cell in direction D2Q9_DIRS[i].

pub fn step(&mut self, omega: f64)

Perform one full LBM step: collision then streaming.

Trait Implementations

impl Clone for GpuLbmGrid

fn clone(&self) -> GpuLbmGrid

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for GpuLbmGrid

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

Formats the value using the given formatter.