Abstract
Damping of pressure pulsations in piping systems excited by centrifugal compressors or blowers at blade-passing frequency dominates acoustic resonant characteristics. In this study, the relation between the resistance coefficient of the compressor and the operating point was investigated experimentally. As a result, the resistance coefficient of the compressor depends on the Reynolds number defined by the equivalent velocity of the pulsating flow. It is shown that the pressure pulsations in piping systems can be evaluated by one-dimensional wave model taking into account the damping characteristics of the compressor. The suppression of the pulsation by installing the orifice plate under resonant conditions is discussed in terms of the ratio of the damping force by the orifice plate to the excitation force.
| Original language | English |
|---|---|
| Pages (from-to) | 650-657 |
| Number of pages | 8 |
| Journal | Nihon Kikai Gakkai Ronbunshu, C Hen/Transactions of the Japan Society of Mechanical Engineers, Part C |
| Volume | 74 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2008 Mar |
| Externally published | Yes |
Keywords
- Blade passing frequency
- Centrifugal compressor
- Centrifugal fan
- Damping
- Pressure pulsation
- Resistance coefficient
ASJC Scopus subject areas
- Mechanics of Materials
- Mechanical Engineering
- Industrial and Manufacturing Engineering