Currently, fast-response aerodynamic probes are widely used for advanced experimental investigations in turbomachinery applications. The most common configuration is a virtual three-hole probe. This solution is a good compromise between probe dimension and accuracy. Several authors have attempted to extend the capabilities of these probes in terms of bandwidth and operating conditions. Even though differences exist between the solutions in the literature, all of the designs involve the positioning of a dynamic pressure sensor close to the measurement point. In general terms, the higher the frequency response, the more the sensor is exposed to the flow. This physical constraint puts a limit on the probe applicability since the measurement conditions have to comply with the maximum allowed operating conditions of the sensor. In other applications, when the conditions are particularly harsh and a direct measurement is not possible, a waveguide probe is commonly used to estimate the local pressure. In this device, the sensor is connected to the measurement point through a transmitting duct which guarantees that the sensor is operating in a less critical condition. Generally, the measurement is performed through a pressure tap and particular attention must be paid to the probe design in order to have an acceptable frequency response function. In this study, the authors conceived, developed, and tested a probe which combines the concept of a fast-response aerodynamic pressure probe with that of a waveguide probe. Such a device exploits the benefits of having the sensor far from the harsh conditions while maintaining the capability to perform an accurate flow measurement.
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March 2017
Research-Article
Development of a Fast-Response Aerodynamic Pressure Probe Based on a Waveguide Approach
Andrea Fioravanti,
Andrea Fioravanti
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: andrea.fioravanti@unifi.it
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: andrea.fioravanti@unifi.it
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Giulio Lenzi,
Giulio Lenzi
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: giulio.lenzi@unifi.it
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: giulio.lenzi@unifi.it
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Giovanni Ferrara,
Giovanni Ferrara
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: giovanni.ferrara@unifi.it
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: giovanni.ferrara@unifi.it
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Lorenzo Ferrari
Lorenzo Ferrari
National Research Council of Italy
(CNR-ICCOM),
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: lorenzo.ferrari@iccom.cnr.it
(CNR-ICCOM),
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: lorenzo.ferrari@iccom.cnr.it
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Andrea Fioravanti
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: andrea.fioravanti@unifi.it
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: andrea.fioravanti@unifi.it
Giulio Lenzi
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: giulio.lenzi@unifi.it
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: giulio.lenzi@unifi.it
Giovanni Ferrara
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: giovanni.ferrara@unifi.it
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: giovanni.ferrara@unifi.it
Lorenzo Ferrari
National Research Council of Italy
(CNR-ICCOM),
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: lorenzo.ferrari@iccom.cnr.it
(CNR-ICCOM),
Department of Industrial Engineering,
University of Florence,
Via S. Marta, 3,
Florence 50139, Italy
e-mail: lorenzo.ferrari@iccom.cnr.it
Contributed by the Controls, Diagnostics and Instrumentation Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received July 6, 2016; final manuscript received July 12, 2016; published online September 27, 2016. Editor: David Wisler.
J. Eng. Gas Turbines Power. Mar 2017, 139(3): 031902 (11 pages)
Published Online: September 27, 2016
Article history
Received:
July 6, 2016
Revised:
July 12, 2016
Citation
Fioravanti, A., Lenzi, G., Ferrara, G., and Ferrari, L. (September 27, 2016). "Development of a Fast-Response Aerodynamic Pressure Probe Based on a Waveguide Approach." ASME. J. Eng. Gas Turbines Power. March 2017; 139(3): 031902. https://doi.org/10.1115/1.4034451
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