Version 1
: Received: 5 November 2024 / Approved: 5 November 2024 / Online: 5 November 2024 (15:06:24 CET)
How to cite:
Zhang, Z.; Zhao, J.; Liu, T.; Zhang, R. Optimization of Temperature Measurement Method for High-Pressure Gas Flow Standard Facility Based on Sonic Nozzle Array. Preprints2024, 2024110340. https://doi.org/10.20944/preprints202411.0340.v1
Zhang, Z.; Zhao, J.; Liu, T.; Zhang, R. Optimization of Temperature Measurement Method for High-Pressure Gas Flow Standard Facility Based on Sonic Nozzle Array. Preprints 2024, 2024110340. https://doi.org/10.20944/preprints202411.0340.v1
Zhang, Z.; Zhao, J.; Liu, T.; Zhang, R. Optimization of Temperature Measurement Method for High-Pressure Gas Flow Standard Facility Based on Sonic Nozzle Array. Preprints2024, 2024110340. https://doi.org/10.20944/preprints202411.0340.v1
APA Style
Zhang, Z., Zhao, J., Liu, T., & Zhang, R. (2024). Optimization of Temperature Measurement Method for High-Pressure Gas Flow Standard Facility Based on Sonic Nozzle Array. Preprints. https://doi.org/10.20944/preprints202411.0340.v1
Chicago/Turabian Style
Zhang, Z., Tingting Liu and Rongping Zhang. 2024 "Optimization of Temperature Measurement Method for High-Pressure Gas Flow Standard Facility Based on Sonic Nozzle Array" Preprints. https://doi.org/10.20944/preprints202411.0340.v1
Abstract
In order to improve the accuracy of wind tunnel test, relying on the high pressure gas source of China Aerodynamic Research and Development Center, a secondary flow standard facility based on sonic nozzle array is developed, and its pressure range is (1~6)MPa, and flow range is (0.12~5.55)kg/s. At present, most facilities use the average temperature measured by the temperature array to represent the upstream temperature of the sonic nozzle array. However, the small flow calibration test results show that, the maximum temperature difference upstream of the standard sonic nozzle array is 1.97 K, the temperature field upstream of the sonic nozzle array shows non-uniformity, so the above method cannot accurately obtain the upstream temperature. To solve this problem, each nozzle used in the standard sonic nozzle array was accurately measured by temperature sensors. And the uncertainty of the facility and the discharge coefficient of the calibrated nozzle between the two methods were compared. Results show that, compared with the discharge coefficient obtained by the tempearture sensor array of 0.9902, the accurate measurement of 0.9904 is closer to National Institute of Metrology, China(NIM) traceable result of 0.9907, and the relative uncertainty of the facility is reduced from 0.124% (k=2) to 0.120% (k=2).
Keywords
Gas flow standard facility; sonic nozzle; temperature measurement; discharge coefficient; uncertainty
Subject
Engineering, Industrial and Manufacturing Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
