Temperature measurement by single-shot dual-line CARS in low-pressure flows

1991 ◽  
Vol 53 (1) ◽  
pp. 23-29 ◽  
Author(s):  
M. P�alat ◽  
M. Lefebvre
Keyword(s):  
Temperature Measurement ◽  
Low Pressure ◽  
Single Shot ◽  
Pressure Flows

Velocity, Pressure and Temperature Measurement in Low-Pressure Supersonic Flow

1996 ◽  
Vol 35 (Part 1, No. 3) ◽  
pp. 1917-1921 ◽  
Author(s):  
Takao Tsuboi ◽  
Kazuhiro Ishii ◽  
Yasufumi Mochizuki
Keyword(s):  
Supersonic Flow ◽  
Temperature Measurement ◽  
Low Pressure ◽  
Velocity Pressure

Temperature measurement in fuel-rich non-sooting low-pressure hydrocarbon flames

2000 ◽  
Vol 70 (3) ◽  
pp. 435-445 ◽  
Author(s):  
A.T. Hartlieb ◽  
B. Atakan ◽  
K. Kohse-Höinghaus
Keyword(s):  
Temperature Measurement ◽  
Low Pressure ◽  
Hydrocarbon Flames

Temperature Measurement System for Low Pressure Ratio Turbine Testing

2003 ◽  
Author(s):  
R. Va´zquez ◽  
J. M. Sa´nchez
Keyword(s):  
Temperature Measurement ◽  
Measurement System ◽  
High Speed ◽  
New Technologies ◽  
Pressure Ratio ◽  
Low Pressure ◽  
High Accuracy ◽  
Single Stage ◽  
Measurement Systems ◽  
Temperature Measurement System

In 1999, ITP (Industria de Turbopropulsores, S.A.) launched a wide on-going research program focusing on new technologies to provide significant improvements in Low Pressure Turbines cost and weight. As consequence of the new technologies the experience limits are exceeded and new unknown concepts, like high stage loading turbines, must be explored and then a wide experimental work is required for validation purposes. Cold flow single stage rigs in high-speed facilities were selected by ITP as main vehicle to carry out the experimental validation. Single stage Low Pressure Turbine rigs have low-pressure ratio and power consumption, therefore efficiency predictions based on temperature drop require high accuracy thermocouple measurement systems (precision uncertainties lower than ±50 mK), if small efficiency variations must be captured. In this paper, a detailed uncertainty analysis is introduced and a temperature measurement system that allows achieving such high measurement accuracy is evaluated and described. Type T thermocouples are proposed for use in the range 0°C to 80°C, which are individually calibrated. The procedure followed for this calibration is presented and how is possible to achieve a precision of 30 mK. It is also shown as conventional UTR based on metal plates can behave as good as thermal baths in terms of temperature uniformity and errors, with the adequate isolation and temperature reference calibration. The conventional data recording and voltage measurement systems are experimentally evaluated, and they are found as main source of temperature errors. Although following some recommendations the precision of those systems can be improved, it is experimentally probed and therefore suggested the use of high accuracy voltmeter with a commutation unit to reduce significantly the temperature uncertainty. Finally a miniature Kiel Shroud is proposed and aerodynamically characterised in a high-speed facility. Mach, Reynolds number, yaw, blockage and manufacturing tolerance impact on recovery factor can be inferred from those results.

scholarly journals Correction of solar irradiation effects on air temperature measurement using a dual-thermistor radiosonde at low temperature and low pressure

2017 ◽  
Vol 25 (2) ◽  
pp. 283-291 ◽  
Author(s):  
Sang-Wook Lee ◽  
Eun Uk Park ◽  
Byung Il Choi ◽  
Jong Chul Kim ◽  
Sang-Bong Woo ◽  
...  
Keyword(s):  
Low Temperature ◽  
Temperature Measurement ◽  
Air Temperature ◽  
Low Pressure ◽  
Solar Irradiation ◽  
Irradiation Effects

scholarly journals Development of a wind retrieval method for low-speed low-pressure flows for ExoMars

2020 ◽  
Vol 180 ◽  
pp. 115752
Author(s):  
Álvaro Soria-Salinas ◽  
María-Paz Zorzano ◽  
Roberto Mantas-Nakhai ◽  
Javier Martín-Torres
Keyword(s):  
Low Pressure ◽  
Retrieval Method ◽  
Low Speed ◽  
Wind Retrieval ◽  
Pressure Flows

REMPI temperature measurement in molecular beam sampled low-pressure flames

2002 ◽  
Vol 29 (2) ◽  
pp. 2627-2633 ◽  
Author(s):  
M. Kamphus ◽  
N.-N. Liu ◽  
B. Atakan ◽  
F. Qi ◽  
A. McIlroy
Keyword(s):  
Temperature Measurement ◽  
Molecular Beam ◽  
Low Pressure
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