Performance of Intrusive Phase-Detection Probe with Large Sensor Size in Air-Water Flow Measurement and Application to Prototype Hydraulic Jump Study
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Volume 148, Issue 11
Abstract
A major challenge of prototype air-water flow measurement is the limited endurance of fragile phase-detection needle sensors in a high-momentum flow with risks of debris damage and particulate erosion. In the present study, a thick-tip conductivity probe is manufactured with sturdier needle sensors than the commonly used laboratory-sized probes. The large sensor tip had low chance to pierce small air bubbles and water droplets, leading to deterioration in the signal output quality, which prevents derivation of basic air-water flow properties using the conventional signal processing technique. To extract valid phase information from the low-quality signal, calibration experiments were conducted in laboratory with reference to a regular-sized probe, to explore a proper signal processing method for the thick-tip probe. The method was validated, and the thick-tip probe was deployed in a field hydraulic jump measurement, allowing for access to the air-water flow characteristics of the prototype D-type jump with a Reynolds number of . Despite the effort of signal calibration and compensation, the use of the thick-tip probe does not guarantee accurate bubble size measurement and requires higher sampling frequencies. Therefore, probes with fine sensor tips are still preferable in prototype measurement.
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Data Availability Statement
Some data and code that support the findings of this study are available from the corresponding author upon reasonable request. Available data include raw signals of the thick-tip probe collected in the prototype study and the data used to produce the figures in this paper.
Acknowledgments
The authors thank the Yongcheng Water Conservancy Bureau, Henan Province, China, for the support for the prototype measurement. This work was sponsored by the National Natural Science Foundation of China (Grant No. 51909180) and the Natural Science Foundation of Sichuan Province (Grant No. 2022NSFSC0970).
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Journal of Hydraulic Engineering
Volume 148 • Issue 11 • November 2022
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© 2022 American Society of Civil Engineers.
History
Received: Nov 3, 2021
Accepted: Jul 10, 2022
Published online: Sep 14, 2022
Published in print: Nov 1, 2022
Discussion open until: Feb 14, 2023
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- Rui Shi, Davide Wüthrich, Hubert Chanson, Discussion of “Performance of Intrusive Phase-Detection Probe with Large Sensor Size in Air-Water Flow Measurement and Application to Prototype Hydraulic Jump Study”, Journal of Hydraulic Engineering, 10.1061/JHEND8.HYENG-13563, 149, 11, (2023).