Abstract
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.
Highlights
The simulation results showed that the higher the engine inlet flow rate, the greater the meas⁃ urement error of the probe
Comparing with the total temperature probe, the total pressure probe measurement accu⁃ racy is more influenced by the flow rate
Journal of Northwestern Polytechnical University, 2021, 39( 4) : 858⁃864 ( in Chinese)
Summary
西北工业大学学报 Journal of Northwestern Polytechnical University https: / / doi.org / 10.1051 / jnwpu / 20213940858 Development of aeroengine testing measurement technology[ J] . Aeronautical Manufacturing Technology, 2000(6) : 24⁃27 ( in Chinese) Impact form total temperature test system errors on the adjustment and performance of the engine[ J] .
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