Numerical simulation of thermoacoustic instability in Rijke tube
The influence of three different states on the thermoacoustic instability characteristics of Rijke tube was compared in order to reseach the influencing factors of thermoacoustic oscillation by using the Rijke tube model with stack as the heat source. The thermoacoustic oscillations are numerically...
| Format: | Article |
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| Language: | zho |
| Published: |
EDP Sciences
2021-06-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2021/03/jnwpu2021393p694/jnwpu2021393p694.html |
| _version_ | 1797427207418675200 |
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| collection | DOAJ |
| description | The influence of three different states on the thermoacoustic instability characteristics of Rijke tube was compared in order to reseach the influencing factors of thermoacoustic oscillation by using the Rijke tube model with stack as the heat source. The thermoacoustic oscillations are numerically simulated from the start-up to the saturation state, and the effects of the temperature on the dynamic viscosity and the thermal conductivity are compared. The results show gravity has a greater influence than the thermoacoustic oscillation caused by thermal buoyancy, and it is related to the inner balance of the tube after the gravity and the temperature gradient caused by the protrusion and the temperature gradient caused by the reduction of the amplitude dissipation. For the comprehensive comparison of the two variable parameters, it is found that when the viscosity coefficient changes with temperature and the thermal conductivity is a fixed value, both of them decrease by 49.5% with the temperature change rate. This result far exceeds the viscosity coefficient itself influences. |
| first_indexed | 2024-03-09T08:41:54Z |
| format | Article |
| id | doaj.art-70484cc1bda3455ca11820ae47797599 |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-09T08:41:54Z |
| publishDate | 2021-06-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-70484cc1bda3455ca11820ae477975992023-12-02T16:40:25ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252021-06-0139369470110.1051/jnwpu/20213930694jnwpu2021393p694Numerical simulation of thermoacoustic instability in Rijke tube01AVIC Xi'an Flight Automic Control Research InstituteSchool of Power and Energy, Northwestern Polytechnical UniversityThe influence of three different states on the thermoacoustic instability characteristics of Rijke tube was compared in order to reseach the influencing factors of thermoacoustic oscillation by using the Rijke tube model with stack as the heat source. The thermoacoustic oscillations are numerically simulated from the start-up to the saturation state, and the effects of the temperature on the dynamic viscosity and the thermal conductivity are compared. The results show gravity has a greater influence than the thermoacoustic oscillation caused by thermal buoyancy, and it is related to the inner balance of the tube after the gravity and the temperature gradient caused by the protrusion and the temperature gradient caused by the reduction of the amplitude dissipation. For the comprehensive comparison of the two variable parameters, it is found that when the viscosity coefficient changes with temperature and the thermal conductivity is a fixed value, both of them decrease by 49.5% with the temperature change rate. This result far exceeds the viscosity coefficient itself influences.https://www.jnwpu.org/articles/jnwpu/full_html/2021/03/jnwpu2021393p694/jnwpu2021393p694.htmlthermoacoustic instabilityrijke tubeplaced statevariable parameters |
| spellingShingle | Numerical simulation of thermoacoustic instability in Rijke tube Xibei Gongye Daxue Xuebao thermoacoustic instability rijke tube placed state variable parameters |
| title | Numerical simulation of thermoacoustic instability in Rijke tube |
| title_full | Numerical simulation of thermoacoustic instability in Rijke tube |
| title_fullStr | Numerical simulation of thermoacoustic instability in Rijke tube |
| title_full_unstemmed | Numerical simulation of thermoacoustic instability in Rijke tube |
| title_short | Numerical simulation of thermoacoustic instability in Rijke tube |
| title_sort | numerical simulation of thermoacoustic instability in rijke tube |
| topic | thermoacoustic instability rijke tube placed state variable parameters |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2021/03/jnwpu2021393p694/jnwpu2021393p694.html |