This contribution addresses the possibility of exploiting the temperature dependency of piezoresistive sensors as a temperature measurement per se. This requires the characterization of the sensor, or the probe as a temperature probe, i.e., determination of the recovery factor between the sensor temperature and the flow temperature. This temperature calibration as well as the determination of the thermal response time was performed for two probe geometries: a high temperature flush-mounted and a low temperature subsurface mounted single sensor total pressure probe, both with a probe head diameter of 2.5 mm. Two applications are reported. The first application was performed with the flush-mounted sensor probe in the high-speed 312-stage axial compressor CREATE tested in the 2 MW test rig of LMFA at École Centrale de Lyon, in France. The probes were traversed at each inter-row section up to temperatures of 180°C and an absolute pressure of 3 bar. The second application was performed with the subsurface mounted sensor probe in the high-speed single stage R-4 compressor test rig of the von Karman Institute in Belgium. Both applications have shown results in extremely good agreement with simultaneous total temperature measurements with a Kiel-type thermocouple probe. They also underline the necessity of a very accurate temperature calibration. Finally, considering the fact that a simultaneous temperature measurement can be obtained at the same location as the pressure measurement from the sensor, it is possible to derive entropy generation after a blade row, based on the average pressure and temperature quantities. This unveils another extremely interesting aspect of using the fast response probe technique in turbomachinery applications.

References

References
1.
Sieverding
,
C. H.
,
Arts
,
T.
,
Dénos
,
R.
, and
Brouckaert
,
J.
,
2000
, “
Measurement Techniques for Unsteady Flows in Turbomachines
,”
Exp. Fluids
,
28
, pp.
285
321
.10.1007/s003480050390
2.
Kupferschmied
,
P.
,
Köppel
,
P.
,
Gizzi
,
W.
,
Roduner
,
C.
, and
Gyamarthy
,
G.
,
2000
, “
Time-Resolved Flow Measurements With Fast Response Aerodynamic Probes in Turbomachines
,”
Meas. Sci. Technol.
,
11
, pp.
1036
1054
.10.1088/0957-0233/11/7/318
3.
Ainsworth
,
R. W.
,
Miller
,
R. J.
,
Moss
,
R. W.
, and
Thorpe
,
S.
,
2000
, “
Unsteady Pressure Measurement
,”
Meas. Sci. Technol.
,
11
, pp.
1055
1076
.10.1088/0957-0233/11/7/319
4.
Brouckaert
,
J. F.
,
2002
, “
Development of Fast Response Aerodynamic Pressure Probes for Time-Resolved Measurements in Turbomachines
,” Ph.D. thesis, Université Libre de Bruxelles/von Karman Institute for Fluid Dynamics, Rhode-Saint-Genese, Belgium.
5.
Epstein
,
A. H.
,
1985
, “
High Frequency Response Measurements in Turbomachines
,” Measurement Techniques in Turbomachines (VKI Lecture Series, VKI SL 1985-03), von Karman Institute, Rhode-St-Genese, Belgium.
6.
Mersinligil
,
M.
,
Brouckaert
,
J.
,
Ottavy
,
X.
, and
Courtiade
,
N.
,
2011
. “
A High Temperature High Bandwidth Fast Response Total Pressure Probe for Measurements in a Multistage Axial Compressor
,” Proceedings of ASME Turbo Expo 2011, Vancouver, BC, Canada, June 6–10,
ASME
Paper No. GT2011-45558.10.1115/GT2011-45558
7.
Cherret
,
M. P.
,
1990
, “
Temperature Error Compensation Applied to Pressure Measurements Taken With Miniature Semiconductors Pressure Transducers in a High Speed Research Compressor
,”
Proceedings of the 10th Symposium on Measuring Techniques for Transonic and Supersonic Flows in Cascades and Turbomachines
, VKI, September 17–18,
C. H.
Sieverding
and
T.
Arts
, eds., von Karman Institute for Fluid Dynamics, Prague, Czech Republic.
8.
Kupferschmied
,
P.
,
Roduner
,
C.
, and
Gyarmathy
,
G.
,
1998
, “
Some Considerations on Using Miniature Pressure Sensors in Fast Response Aerodynamic Probes for Flow Temperature Measurements
,”
Proceedings of the 14th Symposium on Measuring Techniques for Transonic and Supersonic Flows in Cascades and Turbomachines
, Limerick, UK, September 2–4.
9.
Chivers
,
J.
,
2009
, “
High Temperature Pressure Sensors for Gas Turbine Applications
,” Advanced High Temperature Instrumentation for Gas Turbine Applications, (von Karman Lecture Series VKI LS 2009-06) von Karman Institute, Rhode-St-Genese, Belgium.
10.
Denton
,
J. D.
,
1993
, “
The 1993 IGTI Scholar Lecture: Loss Mechanisms in Turbomachines
,”
ASME J. Turbomach.
,
115
(
4
), pp.
621
656
.10.1115/1.2929299
11.
Ng
,
W. F.
, and
Epstein
,
A. H.
,
1983
, “
High Frequency Temperature and Pressure Probe for Unsteady Compressible Flows
,”
Rev. Sci. Instrum.
,
54
(
12
), pp.
1678
1683
.10.1063/1.1137309
12.
Mansour
,
M.
,
Chokani
,
N.
,
Kalfas
,
A. I.
, and
Abhari
,
R. S.
,
2008
, “
Unsteady Entropy Measurements in a High-Speed Radial Compressor
,”
ASME J. Eng. Gas Turbines and Power
,
130
(
2
), pp. 021603.10.1115/1.2799525
13.
Oldfield
,
M. L. G.
, and
Lubbock
,
R.
,
2009
, “
Fast Insertion Pressure and Temperature Probes
,” Advanced High Temperature Instrumentation for Gas Turbine Applications (von Karman Lecture Series VKI LS 2009-06) Rhode-St-Genese, Belgium.
14.
Buttsworth
,
D. R.
, and
Jones
,
T. V.
,
1998
, “
A Fast Response Total Temperature Probe for Unsteady Compressible Flows
,”
ASME J. Eng. Gas Turbines and Power
,
120
, pp.
694
702
.10.1115/1.2818456
15.
Brouckaert
,
J.
,
2007
, “
Fast Response Aerodynamic Probes for Measurements in Turbomachines
,”
IMechE J. Power and Energy
,
221
(
A6
), pp.
811
813
.10.1243/09576509JPE460
16.
Welsh
,
B. L.
, and
Pyne
,
C. R.
,
1980
, “
A Method to Improve the Temperature Stability of Semiconductor Strain Gauge Transducers
,”
J. Phys. E: Sci. Instrum.
,
13
(
8
), p.
816
.10.1088/0022-3735/13/8/003
17.
Smout
,
P.
,
1996
, “
Probe Installation and Design Criteria
,” Temperature Measurements (von Karman Lecture Series VKI LS 1996-07), von Karman Institute, Rhode-St-Genese, Belgium.
18.
Brouckaert
,
J.
,
Van de Wyer
,
N.
,
Desset
,
J.
,
Farkas
,
B.
,
Capart
,
R.
,
Thomas
,
J. F.
,
Isaac
,
N.
,
Hiernaux
,
S.
, and
Gonzalez Perez
,
J.
,
2009
, “
Experimental and Numerical Investigation of a Single Stage Low Pressure Compressor for Counter-Rotating Turbofan Engine Architectures
,”
Proceedings of the 8th European Turbomachinery Conference
, Graz, Austria, March 23–27.
You do not currently have access to this content.