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- W4313202047 abstract "Accurate measured mass flow of the bleeding pipe is essential to confirm the behavior of internal air system during design and verification of an aero-engine. However, the measurement accuracy of bleeding pipe mass flow is always insufficient in commonly used mass flow characteristics curve method when the ratio of inlet and outlet pressure is low. To improve the measurement accuracy of mass flow, this paper proposes a convergent-divergent section in bleeding pipe instead of original straight section, and conducts shape design by simulation and surrogate-based optimization. Moreover, a new mass flow characteristics function is constructed by replacing the pressure ratio of inlet and outlet to the pressure ratio of inlet and the throat. In the optimized bleeding pipe, given the same measurement error, the error propagated to the mass flow through the newly constructed mass flow characteristics function is about 1/60 as that of the common approach, when the pressure ratio of inlet and outlet is as low as 1.2." @default.
- W4313202047 created "2023-01-06" @default.
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- W4313202047 date "2022-01-01" @default.
- W4313202047 modified "2023-09-27" @default.
- W4313202047 title "Simulation and Shape Optimization of the Bleeding Pipe in Aero-Engine Internal Air System to Improve Mass Flow Measurement Accuracy" @default.
- W4313202047 cites W1971362449 @default.
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- W4313202047 doi "https://doi.org/10.1007/978-981-19-9195-0_33" @default.
- W4313202047 hasPublicationYear "2022" @default.
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