Module gpu_sph_density 

GPU-accelerated SPH density computation (CPU mock implementation).

This module provides Smoothed Particle Hydrodynamics (SPH) density computation routines that mirror what would run on a GPU. All kernels are executed on the CPU via plain loops for portability.

Structs

GpuSphGrid

A grid of SPH particles with associated physical quantities.

Functions

cubic_spline_kernel

Cubic-spline SPH kernel W(r, h).

cubic_spline_kernel_grad

Gradient of the cubic-spline kernel ∇W(r, h) along the displacement vector.

gpu_density_kernel

Parallel density summation over all particle pairs (mock via loop).

gpu_force_kernel

Pressure-gradient and viscosity force kernel (mock via loop).

gpu_neighbor_list

Build a cell-list neighbor search structure.

gpu_pressure_tait

Vectorized Tait EOS pressure update.

launch_density_pass

Orchestrate a full SPH density pass.