Module assembly 

BEM matrix assembly

This module provides three methods for assembling BEM systems:

• tbem - Traditional BEM with O(N²) dense matrix (always available)
• slfmm - Single-Level Fast Multipole Method (requires native or wasm feature)
• mlfmm - Multi-Level Fast Multipole Method

For small problems (N < 1000), TBEM is usually fastest. For larger problems, FMM methods provide O(N log N) or O(N) scaling.

WASM Compatibility

With the wasm feature, all assembly methods are available including SLFMM. Parallel processing is provided via wasm-bindgen-rayon (Web Workers).

Re-exports

pub use mlfmm::MlfmmSystem;

pub use mlfmm::build_cluster_tree;

pub use mlfmm::build_mlfmm_system;

pub use slfmm::SlfmmSystem;

pub use slfmm::build_slfmm_system;

pub use sparse::BlockedCsr;

pub use sparse::CsrBuilder;

pub use sparse::CsrMatrix;

pub use tbem::TbemSystem;

pub use tbem::apply_row_sum_correction;

pub use tbem::build_tbem_system;

pub use tbem::build_tbem_system_corrected;

pub use tbem::build_tbem_system_scaled;

pub use tbem::build_tbem_system_with_beta;

Modules

mlfmm

Multi-Level Fast Multipole Method (MLFMM) assembly

slfmm

Single-Level Fast Multipole Method (SLFMM) assembly

sparse

Sparse matrix structures (CSR format)

tbem

Traditional BEM (O(N²) dense matrix) assembly