| Probe design for measuring total temperature of combustor outlet based on water cooling |
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| 作者姓名： | ZHAO Kai LI Feng LU Fuguo ZHOU Tao YANG Hongyu |
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| 作者单位： | 1.School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China |
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| 基金项目： | National Natural Science Foundation (9174110013); Aviation Power Fund (614B090310) |
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| 摘 要： | To obtain the outlet temperature of combustor, a kind of high-temperature and water cooling thermocouple was designed. The main factors affecting the results of thermocouple measurement were analyzed after numerical simulation. Results showed that the high-temperature water cooling thermocouple can achieve high temperature measurement under the condition of 2400K. With the increase of the distance between the water cooling structure and the stagnation cover, the temperature measurement result was more accurate, and the increase in the area ratio of the inlet and outlet of the stagnation cover within a reasonable range can make the measurement results more accurate. The surface emissivity of the measuring point had a great influence on the radiation error. The pressure and flow rate of cooling water can be effectively reduced after adding zirconia coating onto the surface of the rake body.
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| 关 键 词： | probe total temperature combustion chamber water cooling thermocouple |
| 收稿时间： | 2017/4/5 0:00:00 |
Probe design for measuring total temperature of combustor outlet based on water cooling |
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| ZHAO Kai,LI Feng,LU Fuguo,ZHOU Tao,YANG Hongyu.Probe design for measuring total temperature of combustor outlet based on water cooling[J].Journal of Aerospace Power,2018,33(9):2084-2092. |
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| Institution: | 1.School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191,China2.School of Aviation Operations and Services,Aviation University of Air Force,Changchun 130022,China3.School of Energy and Power Engineering,Beijing University of Aeronautics and Astronautics,Beijing 100191 |
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| Abstract: | To obtain the outlet temperature of combustor,a kind of high-temperature and water cooling thermocouple was designed.The main factors affecting the results of thermocouple measurement were analyzed after numerical simulation.Results showed that the high-temperature water cooling thermocouple can achieve high temperature measurement under the condition of 2 400 K.With the increase of the distance between the water cooling structure and the stagnation cover,the temperature measurement result was more accurate,and the increase in the area ratio of the inlet and outlet of the stagnation cover within a reasonable range can make the measurement results more accurate.The surface emissivity of the measuring point had a great influence on the radiation error.The pressure and flow rate of cooling water can be effectively reduced after adding zirconia coating onto the surface of the rake body. |
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