On estimating the sound radiation of large radial ventilators from acoustic measurements at a model test stand
Abstract
An elementary description of noise passing through walls and openings led to formulas approximating the noise radiation of a ventilator. From pressure levels measured in an exhaust channel of the test stand for the original or for a geometrically similar model, the A (DIN 45633) and the unweighted sound power level of the ventilator or the average pressure level at a shell surface could be calculated.
- Publication:
-
Unknown
- Pub Date:
- October 1977
- Bibcode:
- 1977oesr.rept.....B
- Keywords:
-
- Acoustic Measurement;
- Engine Noise;
- Estimating;
- Ventilators;
- Channel Flow;
- Exhaust Systems;
- Sound Pressure;
- Acoustics