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| Content Provider | Springer Nature Link |
|---|---|
| Author | Li, Yan Rong Someya, Satoshi Okamoto, Koji |
| Copyright Year | 2009 |
| Abstract | Systems with closed side branches are liable to an excitation of sound known as cavity tone. It may occur in pipe branches leading to safety valves or to boiler relief valves. The outbreak mechanism of the cavity tone has been ascertained by phase-averaged pressure measurements in previous research, while the relation between sound propagation and the flow field is still unclear due to the difficulty of detecting the instantaneous velocity field. It is possible to detect the two-dimensional instantaneous velocity field using high time-resolved particle image velocimetry (PIV). In this study, flow-induced acoustic resonance in a piping system containing closed side branches was investigated experimentally. A high time-resolved PIV technique was used to measure the gas flow in a cavity. Airflow containing oil mist as tracer particles was measured using a high-frequency pulse laser and a high-speed camera. The present investigation on the coaxial closed side branches is the first rudimentary study to visualize the fluid flow two-dimensionally in a cross-section using high time-resolved PIV, and to measure the pressure at the downstream side opening of the cavity by microphone. The fluid flows at different points in the cavity interact, with some phase differences between them, and the relation between the fluid flows was clarified. |
| Starting Page | 7 |
| Ending Page | 16 |
| Page Count | 10 |
| File Format | |
| ISSN | 13438875 |
| Journal | Journal of Visualization |
| Volume Number | 13 |
| Issue Number | 1 |
| e-ISSN | 18758975 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2009-12-08 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Cavity tone Acoustic resonance Flow-induced vibration Coaxial closed side branches Visualization Particle image velocimetry Classical Continuum Physics Computer Imaging, Vision, Pattern Recognition and Graphics Engineering Fluid Dynamics Engineering Thermodynamics, Heat and Mass Transfer |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electrical and Electronic Engineering |
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