Acoustics
Perforated muffler pressure field
Adjust frequency on the fixed three-dimensional multi-chamber perforated muffler to predict the acoustic-pressure amplitude field.
Published scope
The inputs, geometry and outputs below follow the registered public case. Published verification applies only to the stated conditions. Service availability requires a live request.
Frequency-conditioned POD neural surrogate
Baffles, ducts and perforated impedance interfaces alter the pressure distribution in a multi-chamber muffler. This case uses a three-dimensional half-symmetry geometry with seven acoustic domains.
Predict pressure amplitude at 16,735 original cell-interior points for frequencies from 20 to 600 Hz, with fixed geometry, air at 20 C, 1 Pa incident pressure and no mean flow.
- Geometry
- 3D multi-chamber perforated muffler, half-symmetry
- Geometry scope
- same_geometry_only
Adjustable inputs
| Input | Range | Default |
|---|---|---|
| Frequency | 20.0 – 600.0 Hz | 100.0 |
Output fields
- Pressure amplitude: Pressure amplitude
Registered verification
- registered_status
- passed
- summary
- 43 newly frozen frequencies passed independent native-field comparison. Previous 43 frequencies separately passed regression.
- reference
- COMSOL 6.3 native pressure field
- holdout_frequency_count
- 43
- points_per_frequency
- 16735
- metric_aggregation
- worst metric across independent frequencies
- holdout_metrics
- RMSE: 0.0010723610449526746; Relative L2: 0.0026604900295607494; Correlation: 0.9999395677591562
- experimental_accuracy
- not_claimed
Recorded workflow evidence
- Project opening
- PASS
- Save and reopen
- PASS
- Training
- NOT_RUN
- Prediction
- NOT_RUN
- Independent accuracy
- NOT_RUN
- Portable validation
- NOT_RUN
These are recorded checks; they do not establish live service availability or accuracy for every new request.