Study on the theoretical calculation method of jet precooling evaporation of the TBCC engine
Jet precooling technology is an effective way to solve the thrust trap problem in TBCC engine mode conversion. In practical experiments, the evaporation rate characterizes the cooling effect in the cooling section and is one of the important parameters that need to be obtained. However, high tempera...
Saved in:
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2025-09-01
|
| Series: | Results in Engineering |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590123025025009 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1849408574470488064 |
|---|---|
| author | Jianyong Zhu Yuchen Feng Taiqiu Liu Xin You |
| author_facet | Jianyong Zhu Yuchen Feng Taiqiu Liu Xin You |
| author_sort | Jianyong Zhu |
| collection | DOAJ |
| description | Jet precooling technology is an effective way to solve the thrust trap problem in TBCC engine mode conversion. In practical experiments, the evaporation rate characterizes the cooling effect in the cooling section and is one of the important parameters that need to be obtained. However, high temperature and high humidity environments have a significant impact on the measurement of evaporation rate, and obtaining accurate evaporation values in experiments is one of the difficulties in jet precooling experiments. This study proposes a 0-D theoretical calculation model for calculating the droplet evaporation rate during the jet cooling process based on the law of energy conservation and easily measurable physical property parameters at the inlet and outlet from the perspective of theoretical calculation and verifies it by simulation under 15 typical working conditions. The results show that the proposed 0-D model has a calculation error of less than ±1 % under the given 15 working conditions, indicating that this method can accurately calculate the evaporation rate of the jet cooling process. For a turbine engine flying at a constant dynamic pressure of 46KPa, when Ma=2.5 and the jet flow rate is 4 % of the inlet flow rate, a maximum evaporation rate of 100 % can cause a 20.5 % increase in the temperature drop coefficient of the turbine engine. The equivalent Mach number at the outlet of the precooling section of the engine without precooling decreases by 0.42, effectively improving the upper limit of the turbine engine's operation. |
| format | Article |
| id | doaj-art-b0ad75ca4d024e499b0f99ed3d805eac |
| institution | Kabale University |
| issn | 2590-1230 |
| language | English |
| publishDate | 2025-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Results in Engineering |
| spelling | doaj-art-b0ad75ca4d024e499b0f99ed3d805eac2025-08-20T03:35:44ZengElsevierResults in Engineering2590-12302025-09-012710643110.1016/j.rineng.2025.106431Study on the theoretical calculation method of jet precooling evaporation of the TBCC engineJianyong Zhu0Yuchen Feng1Taiqiu Liu2Xin You3College of Aeroengine, Shenyang Aerospace University, Shenyang 110136, China; Corresponding author.College of Aeroengine, Shenyang Aerospace University, Shenyang 110136, ChinaAECC Shenyang Aeroengine Research Institute, Shenyang 110015, ChinaCollege of Aeroengine, Shenyang Aerospace University, Shenyang 110136, ChinaJet precooling technology is an effective way to solve the thrust trap problem in TBCC engine mode conversion. In practical experiments, the evaporation rate characterizes the cooling effect in the cooling section and is one of the important parameters that need to be obtained. However, high temperature and high humidity environments have a significant impact on the measurement of evaporation rate, and obtaining accurate evaporation values in experiments is one of the difficulties in jet precooling experiments. This study proposes a 0-D theoretical calculation model for calculating the droplet evaporation rate during the jet cooling process based on the law of energy conservation and easily measurable physical property parameters at the inlet and outlet from the perspective of theoretical calculation and verifies it by simulation under 15 typical working conditions. The results show that the proposed 0-D model has a calculation error of less than ±1 % under the given 15 working conditions, indicating that this method can accurately calculate the evaporation rate of the jet cooling process. For a turbine engine flying at a constant dynamic pressure of 46KPa, when Ma=2.5 and the jet flow rate is 4 % of the inlet flow rate, a maximum evaporation rate of 100 % can cause a 20.5 % increase in the temperature drop coefficient of the turbine engine. The equivalent Mach number at the outlet of the precooling section of the engine without precooling decreases by 0.42, effectively improving the upper limit of the turbine engine's operation.http://www.sciencedirect.com/science/article/pii/S2590123025025009Combined powerMass jet precoolingEvaporation0-dimensional modelTheoretical calculation |
| spellingShingle | Jianyong Zhu Yuchen Feng Taiqiu Liu Xin You Study on the theoretical calculation method of jet precooling evaporation of the TBCC engine Results in Engineering Combined power Mass jet precooling Evaporation 0-dimensional model Theoretical calculation |
| title | Study on the theoretical calculation method of jet precooling evaporation of the TBCC engine |
| title_full | Study on the theoretical calculation method of jet precooling evaporation of the TBCC engine |
| title_fullStr | Study on the theoretical calculation method of jet precooling evaporation of the TBCC engine |
| title_full_unstemmed | Study on the theoretical calculation method of jet precooling evaporation of the TBCC engine |
| title_short | Study on the theoretical calculation method of jet precooling evaporation of the TBCC engine |
| title_sort | study on the theoretical calculation method of jet precooling evaporation of the tbcc engine |
| topic | Combined power Mass jet precooling Evaporation 0-dimensional model Theoretical calculation |
| url | http://www.sciencedirect.com/science/article/pii/S2590123025025009 |
| work_keys_str_mv | AT jianyongzhu studyonthetheoreticalcalculationmethodofjetprecoolingevaporationofthetbccengine AT yuchenfeng studyonthetheoreticalcalculationmethodofjetprecoolingevaporationofthetbccengine AT taiqiuliu studyonthetheoreticalcalculationmethodofjetprecoolingevaporationofthetbccengine AT xinyou studyonthetheoreticalcalculationmethodofjetprecoolingevaporationofthetbccengine |