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Keywords: measurement
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Proceedings Papers

Study on Accuracy of Heat Transfer Coefficient Determination in the Bearing Chamber for Gas Turbine Engine

Illia Petukhov, Taras Mykhailenko, Sergiy Yepifanov, Oleg Shevchuk
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A007, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14304
https://doi.org/10.1115/GT2020-14304
... when the external cooling of the bearing chamber is used to obtain the temperature difference sufficient for measurement. Three ways to reduce the relative error of the HTC determination in the bearing chamber were analyzed: i) decreasing the temperature measurement error; ii) decreasing...
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Topics: Bearings, Cooling, Errors, Gas turbines, Heat transfer coefficients, Temperature gradient
Proceedings Papers

Creation of Models of Fan Blades According to Airfoil Measurements

Alexandr N. Arkhipov, Yury A. Ravikovich, Dmitry P. Kholobtsev
Proc. ASME. GT2020, Volume 1: Aircraft Engine; Fans and Blowers, V001T01A034, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-16039
https://doi.org/10.1115/GT2020-16039
... calculation at minimal costs. The method of automated creation of a model of finished blades with real production deviations of the airfoil according to the data of measurement in the CAD system is presented. Since more than 1000 measured points are used in the construction of the model of the measured...
View Paper titled, Creation of Models of Fan Blades According to Airfoil <span class="search-highlight">Measurements</span>
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Topics: Airfoils, Blades, Construction, Geometry
Proceedings Papers

Rotor Torsional Response: A Critical Parameter to Measure and Monitor for Rotating Machinery

Jing Yuan, Kenneth Heyden, Lyn Greenhill
Proc. ASME. GT2020, Volume 10B: Structures and Dynamics, V10BT29A018, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-15266
https://doi.org/10.1115/GT2020-15266
... Abstract Even though the analytical aspects of the torsional response of a rotor system are straightforward, actually measuring the torsional response has been historically very difficult and therefore somewhat neglected. It is recognized that dynamic torsional stresses can contribute...
View Paper titled, Rotor Torsional Response: A Critical Parameter to <span class="search-highlight">Measure</span> and Monitor for Rotating Machinery
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Topics: Machinery, Rotors, Stress, Damage, Dynamic response, Modeling, Sensors, Torque
Proceedings Papers

Measurements of Density and Sound Speed in Mixtures Relevant to sCO 2 Power Cycles

Suhyeon Park, Justin Urso, K. R. V. (Raghu) Manikantachari, Ashvin Hosangadi, Andrea Zambon, Subith S. Vasu
Proc. ASME. GT2020, Volume 11: Structures and Dynamics: Structural Mechanics, Vibration, and Damping; Supercritical CO2, V011T31A003, September 21–25, 2020
Publisher: American Society of Mechanical Engineers
Paper No: GT2020-14335
https://doi.org/10.1115/GT2020-14335
... and industrial applications. Thermophysical properties of mixtures may be beyond the valid range of the widely used database such as NIST REFPROP. Experimental data of mixtures properties in the literature is limited which is necessary to develop high-fidelity design tools for sCO 2 power cycles. We measured...
View Paper titled, <span class="search-highlight">Measurements</span> of Density and Sound Speed in Mixtures Relevant to sCO 2 Power Cycles
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Topics: Density, Supercritical carbon dioxide, Thermodynamic power cycles
Proceedings Papers

CFD Prediction and Test Results of Stiffness and Damping Coefficients for Brush-Labyrinth Gas Seals

Alexander O. Pugachev, Martin Deckner
Proc. ASME. GT2010, Volume 6: Structures and Dynamics, Parts A and B, 175-185, June 14–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: GT2010-22667
https://doi.org/10.1115/GT2010-22667
... This paper presents ongoing investigations on calculation and measurement of rotordynamic coefficients for brush-labyrinth gas seals. The seals are tested on static and dynamic test rigs to measure leakage, pressure distribution, and seal specific forces. To predict seal performance a full three...
View Paper titled, CFD Prediction and Test Results of Stiffness and Damping Coefficients for Brush-Labyrinth Gas Seals
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Topics: Computational fluid dynamics, Damping, Porous materials, Stiffness
Proceedings Papers

Gas Turbine Data Validation Using Gas Path Analysis

Patrick C. Escher
Proc. ASME. GT2002, Volume 2: Turbo Expo 2002, Parts A and B, 45-51, June 3–6, 2002
Publisher: American Society of Mechanical Engineers
Paper No: GT2002-30024
https://doi.org/10.1115/GT2002-30024
... A new method for the data validation of gas turbines is introduced that allows to assess engine degradation. The degree of degradation is derived from the analytical method of Gas Path Analysis (GPA). The method, built on GPA, allows to isolate faulty measurements. The method repeatedly...
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Topics: Gas turbines, Engines, Errors
Proceedings Papers

Experimental Investigation of the Rotor-Stator Interactions Within a High Speed, Multi-Stage, Axial Compressor: Part 1 — Experimental Facilities and Results

David Arnaud, Xavier Ottavy, Andre´ Vouillarmet
Proc. ASME. GT2004, Volume 5: Turbo Expo 2004, Parts A and B, 903-914, June 14–17, 2004
Publisher: American Society of Mechanical Engineers
Paper No: GT2004-53764
https://doi.org/10.1115/GT2004-53764
... This paper relates to laser anemometry measurements (LDA) conducted in a high speed, three-stage, axial compressor. Particular attention has been paid to the estimation of the measurement accuracy. Three different synchronization procedures have been implemented in order to enhance the exactness...
View Paper titled, Experimental Investigation of the Rotor-Stator Interactions Within a High Speed, Multi-Stage, Axial Compressor: Part 1 — Experimental Facilities and Results
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Topics: Compressors, Lasers, Rotors, Stators