Temperature distributions of internal flow and external jet fields of double serpentine convergent nozzle for turbofan
In order to clarify the temperature distribution of a double-serpentine convergent nozzle wall and the exhaust plume characteristics downstream the nozzle exit based on the real exhaust mixer configuration of a turbofan engine, the temperature distribution of the internal and external jet flow field...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | zho |
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EDP Sciences
2021-12-01
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| Series: | Xibei Gongye Daxue Xuebao |
| Subjects: | |
| Online Access: | https://www.jnwpu.org/articles/jnwpu/full_html/2021/06/jnwpu2021396p1331/jnwpu2021396p1331.html |
| _version_ | 1797641259559419904 |
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| author | Sun Peng Zhou Li Wang Zhanxue Shi Jingwei |
| author_facet | Sun Peng Zhou Li Wang Zhanxue Shi Jingwei |
| author_sort | Sun Peng |
| collection | DOAJ |
| description | In order to clarify the temperature distribution of a double-serpentine convergent nozzle wall and the exhaust plume characteristics downstream the nozzle exit based on the real exhaust mixer configuration of a turbofan engine, the temperature distribution of the internal and external jet flow fields of the double-serpentine convergent nozzle are simulated numerically. The simulation results show that the coupling effect between S-shaped circular-to-rectangular profile and the exhaust mixer has a joint influence on the "hot streak" distribution of the double-serpentine convergent nozzle wall and the exhaust plume characteristics downstream the nozzle exit. The "Hot streak" is distributed in the shape similar to several ribbons in the central areas of the upper and lower wall of the second serpentine passage and in the exit area. The maximum value of temperature on the lower wall is 867 K and increases 25.1% compared with that on the upper wall. However, the average value of temperature of the lower wall is merely 7.1% higher than that of the upper wall. The "whale tail" high-temperature core area is formed on the exit plane of the double-serpentine convergent nozzle. It leads to two wide high-temperature jet flow areas in the high-temperature core area downstream the nozzle exit. The low-temperature flow occurs along the two sides of the exhaust plume core area due to the lateral-direction motion towards vortices. |
| first_indexed | 2024-03-11T13:42:59Z |
| format | Article |
| id | doaj.art-154f1fbbcb654a66aa78e7ad6e87d6a5 |
| institution | Directory Open Access Journal |
| issn | 1000-2758 2609-7125 |
| language | zho |
| last_indexed | 2024-03-11T13:42:59Z |
| publishDate | 2021-12-01 |
| publisher | EDP Sciences |
| record_format | Article |
| series | Xibei Gongye Daxue Xuebao |
| spelling | doaj.art-154f1fbbcb654a66aa78e7ad6e87d6a52023-11-02T11:11:51ZzhoEDP SciencesXibei Gongye Daxue Xuebao1000-27582609-71252021-12-013961331133910.1051/jnwpu/20213961331jnwpu2021396p1331Temperature distributions of internal flow and external jet fields of double serpentine convergent nozzle for turbofanSun Peng0Zhou Li1Wang Zhanxue2Shi Jingwei3School of Power and Energy, Northwestern Polytechnical UniversitySchool of Power and Energy, Northwestern Polytechnical UniversitySchool of Power and Energy, Northwestern Polytechnical UniversitySchool of Power and Energy, Northwestern Polytechnical UniversityIn order to clarify the temperature distribution of a double-serpentine convergent nozzle wall and the exhaust plume characteristics downstream the nozzle exit based on the real exhaust mixer configuration of a turbofan engine, the temperature distribution of the internal and external jet flow fields of the double-serpentine convergent nozzle are simulated numerically. The simulation results show that the coupling effect between S-shaped circular-to-rectangular profile and the exhaust mixer has a joint influence on the "hot streak" distribution of the double-serpentine convergent nozzle wall and the exhaust plume characteristics downstream the nozzle exit. The "Hot streak" is distributed in the shape similar to several ribbons in the central areas of the upper and lower wall of the second serpentine passage and in the exit area. The maximum value of temperature on the lower wall is 867 K and increases 25.1% compared with that on the upper wall. However, the average value of temperature of the lower wall is merely 7.1% higher than that of the upper wall. The "whale tail" high-temperature core area is formed on the exit plane of the double-serpentine convergent nozzle. It leads to two wide high-temperature jet flow areas in the high-temperature core area downstream the nozzle exit. The low-temperature flow occurs along the two sides of the exhaust plume core area due to the lateral-direction motion towards vortices.https://www.jnwpu.org/articles/jnwpu/full_html/2021/06/jnwpu2021396p1331/jnwpu2021396p1331.htmlexhaust mixerdouble-serpentine convergent nozzlehot streakexhaust plume core area |
| spellingShingle | Sun Peng Zhou Li Wang Zhanxue Shi Jingwei Temperature distributions of internal flow and external jet fields of double serpentine convergent nozzle for turbofan Xibei Gongye Daxue Xuebao exhaust mixer double-serpentine convergent nozzle hot streak exhaust plume core area |
| title | Temperature distributions of internal flow and external jet fields of double serpentine convergent nozzle for turbofan |
| title_full | Temperature distributions of internal flow and external jet fields of double serpentine convergent nozzle for turbofan |
| title_fullStr | Temperature distributions of internal flow and external jet fields of double serpentine convergent nozzle for turbofan |
| title_full_unstemmed | Temperature distributions of internal flow and external jet fields of double serpentine convergent nozzle for turbofan |
| title_short | Temperature distributions of internal flow and external jet fields of double serpentine convergent nozzle for turbofan |
| title_sort | temperature distributions of internal flow and external jet fields of double serpentine convergent nozzle for turbofan |
| topic | exhaust mixer double-serpentine convergent nozzle hot streak exhaust plume core area |
| url | https://www.jnwpu.org/articles/jnwpu/full_html/2021/06/jnwpu2021396p1331/jnwpu2021396p1331.html |
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