Volume 39, Number 4, August 2021
|Page(s)||858 - 864|
|Published online||23 September 2021|
Effects of probes with different structures on the flow field and measurement results of imported compressors
School of Power and Energy, Northwestern Polytechnical University, Xi'an 710129, China
2 General Research Department, China National Aero-Developmerot, Zhuzhou 412002, China
In this paper, the measurement accuracy of two different types of total pressure probe and total temperature probe in turboshaft engine compressor inlet channel and the influence of these two probes on the flow field through numerical simulation was studied. At the same time, the influence of the probe structure and installation position on probe measurement results under three typical working conditions of cruise, maximum continuous and takeoff was analyzed. The simulation results showed that the higher the engine inlet flow rate, the greater the measurement error of the probe. Comparing with the total temperature probe, the total pressure probe measurement accuracy is more influenced by the flow rate. The velocity uniformity is less affected by the engine operating conditions and is mainly related to the structure of the inserted probes. The closer the total pressure probe to the support plate, the greater the measurement error. The probe installation position has a small effect on the total pressure loss coefficient at the outlet.
Key words: compressor inlet level / total pressure probe / total temperature probe / measurement error / speed uniformity / total pressure loss coefficient
关键字 : 压气机进口级 / 总压探针 / 总温探针 / 测量误差 / 速度均匀度 / 总压损失系数
© 2021 Journal of Northwestern Polytechnical University. All rights reserved.
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