Boundary integral equations
- Complex-wavenumber Helmholtz equation
- Conventional and dual Burton–Miller formulations
- Irregular-frequency treatment for exterior domains
- Conditioning suitable for thin-structure applications
Technical details
Solver, formulation, and output capabilities
FastBEM Acoustics addresses time-harmonic Helmholtz problems in three-dimensional interior, exterior, full-space, and half-space domains.
Four numerical strategies
- Adaptive wideband fast multipole BEM
- Adaptive cross approximation BEM
- Optimized conventional direct BEM
- High-frequency BEM for far-field estimation
Surface physics
- Pressure
- Normal particle velocity
- Acoustic impedance
- Complex wavenumber for damping or attenuation
Excitation options
- Multiple plane incident waves
- Reverberant conditions
- Monopole and dipole point sources
- User-defined acoustic sources
Results
Boundary, field, and system-level outputs
| Category | Available quantities |
|---|---|
| Acoustic state | Complex pressure, particle velocity, SPL, and sound intensity level on boundary and field surfaces |
| Integral results | Total sound power and sound power level |
| Transfer data | Acoustic transfer matrix or acoustic transfer vector |
| Contribution analysis | Acoustic panel contribution factors |
| Field reuse | Fast evaluation on new field surfaces using a previously solved boundary result |
| Tecplot | Established One and All ASCII layouts plus V9 Bin and BAll double-precision binary output |
Engineering workflows
- Simple text-based model and parameter inputs
- Interfaces for ANSYS and NASTRAN-derived BEM models
- Solver-only package for in-house and commercial CAE integration
- Tecplot post-processing and time-domain result animation
- FastBEM View Java GUI
Deployment
- Windows 10/11, 64-bit
- Linux, 64-bit packages by request
- OpenMP multicore parallel execution
- Customized versions by arrangement
Need input-level detail?
The User Guide documents model records, solver parameters, boundary conditions, and output controls.