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Noise generated by flow through large butterfly valves
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Huff, Ronald G. |
| Copyright Year | 1987 |
| Description | A large butterfly valve (1.37 m diam) was acoustically tested to measure the noise generated and propagating in both the upstream and downstream directions. The experimental investigation used wall mounted pressure transducers to measure the fluctuating component of the pipe static pressure upstream and downstream of the valve. Microphones upstream of the pipe inlet and located in a plenum were used to measure the noise radiated from the valve in the upstream direction. Comparison of the wall pressure downstream of the valve to a prediction were made. Reasonable agreement was obtained with the valve operating at a choked condition. The noise upstream of the valve is 30 dB less than that measured downstream. |
| File Size | 4723713 |
| Page Count | 17 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19870007153 |
| Archival Resource Key | ark:/13960/t7rn82474 |
| Language | English |
| Publisher Date | 1987-01-01 |
| Access Restriction | Open |
| Subject Keyword | Acoustics Noise Propagation Pressure Sensors Acoustic Measurement Upwash Fluid Flow Wind Tunnel Tests Downwash Control Valves Wind Tunnel Models Noise Generators Butterfly Valves Microphones Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
