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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yamashita, Ryo Hayashi, Hidechito Okumura, Tetsuya Hamakawa, Hiromitsu |
| Copyright Year | 2014 |
| Abstract | The pitch of the spiral finned tube influences seriously to the acoustic resonance in the heat exchanger. In this research, the flow characteristics in relating to the aeolian tone from the finned cylinder are studied by the numerical simulation. It is observed that the tonal noise generated from the finned tube at two pitch spaces. The ratio of the fin pitch to the cylinder diameter is changed at 0.11 and 0.27. The tone level increases and the frequency decreases with the pitch shorter. The separation flow from the cylinder generates the span-wise vortices, Karman vortices, and the separation flow from the fin generates the stream-wise vortices. When the fin pitch ratio is small, the stream-wise vortices line up to span-wise and become weak rapidly. Only the Karman vortices are remained and integrate in span. So the Karman vortex became large. This causes the low frequency and the large aeolian tone. |
| Starting Page | 552 |
| Ending Page | 557 |
| Page Count | 6 |
| File Format | |
| ISSN | 10032169 |
| Journal | Journal of Thermal Science |
| Volume Number | 23 |
| Issue Number | 6 |
| e-ISSN | 1993033X |
| Language | English |
| Publisher | Science Press |
| Publisher Date | 2014-11-22 |
| Publisher Place | Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Aerodynamic Noise Aeolian Tone Karman Vortex Spiral Finned Tube Classical Continuum Physics Engineering Fluid Dynamics Engineering Thermodynamics, Heat and Mass Transfer |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics |
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