Modelling of self-induced oscillations in the mixing head of a rim machine
文献类型：期刊论文
| 作者 | Li, Xiaojin; Santos, Ricardo J.; Lopes, Jose Carlos B. |
| 刊名 | canadian journal of chemical engineering
 |
| 出版日期 | 2007-02-01 |
| 卷号 | 85期号:1页码:45-54 |
| 关键词 | modelling self-induced oscillations pressure fluctuation frequency |
| 英文摘要 | in this paper, the self-induced oscillations in the mixing head of a rim machine were modelled. an analytical and simple correlation was derived between the strouhal number and the averaged pressure drop along the amplitude of the oscillation in the mixing chamber. this correlation theoretically identified that the frequency of the oscillations could be well correlated by the jet reynolds number, red, and the dimensionless distance between the two jets as proposed by denshchikov et al., fluid dyn. 3, 460-462 (1983). the flow field dynamics in the mixing head was simulated successfully by fluent and the computed pressure fluctuations were used to calculate the frequencies of the oscillations in the mixing head. the calculated strouhal numbers are in good agreement with the dominant frequency from the power spectra of the measured velocity component u(x) (santos, 2003). finally, the effect of re(d) and froude number, fr, on the strouhal number was investigated in the impingement region. the average strouhal number showed a decrease with the reynolds numbers, due to the increasing randomness of flow field in the impingement region. it was also found that the operations at lower values of fr presented an increasing stability up to the point where the system is unable to present dynamic evolution. the model in this paper provides a theoretical starting point towards understanding of the quantities of the oscillatory flow in the mixing head, as well as a numerical approach to evaluate the dominant frequency in the mixing chamber. |
| WOS标题词 | science & technology ; technology |
| 类目[WOS] | engineering, chemical |
| 研究领域[WOS] | engineering |
| 关键词[WOS] | sustained oscillations ; shear layers ; flow ; plate ; tone |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000244620500004 |
| 公开日期 | 2015-11-17 |
| 源URL | [http://159.226.238.44/handle/321008/140580]  |
| 专题 | 大连化学物理研究所_中国科学院大连化学物理研究所 |
| 作者单位 | 1.Univ Porto, Fac Engn, Dept Chem Engn, Lab Separat & React Engn, P-4200465 Oporto, Portugal 2.Dalian Inst Chem Phys, Dalian 116023, Liaoning Prov, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li, Xiaojin,Santos, Ricardo J.,Lopes, Jose Carlos B.. Modelling of self-induced oscillations in the mixing head of a rim machine[J]. canadian journal of chemical engineering,2007,85(1):45-54. |
| APA | Li, Xiaojin,Santos, Ricardo J.,&Lopes, Jose Carlos B..(2007).Modelling of self-induced oscillations in the mixing head of a rim machine.canadian journal of chemical engineering,85(1),45-54. |
| MLA | Li, Xiaojin,et al."Modelling of self-induced oscillations in the mixing head of a rim machine".canadian journal of chemical engineering 85.1(2007):45-54. |
入库方式： OAI收割
来源：大连化学物理研究所
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