Author: Kelly R. Navarra
Publisher:
ISBN: 9781423549949
Category :
Languages : en
Pages : 92
Book Description
A new pressure measurement technique that employs the tools of molecular spectroscopy has recently received considerable attention in the community. Measurements are made via oxygen-sensitive molecules attached to the surface of interest as a coating, or paint. The pressure-sensitive paint (PSP) technique is now commonly used in stationary wind tunnel tests; this thesis presents extension of the technique to advanced turbomachinery applications. New pressure- and temperature-sensitive paints (TSPs) have been developed for application to a state-of-the-art compressor where pressures up to 2 atm and surface temperatures to 140 deg C are expected for the first stage rotor. PSP and TSP data images have been acquired from the suction surface of the first- stage rotor at 85 percent of the correct design speed for the compressor peak efficiency condition. The shock structure is clearly visible in the pressure image, and visual comparison to the corresponding computer prediction shows quantitative pressures similar to the PSP data. The measurement error is estimated to range from 0.36 kPa in low pressure regions to 4 kPa in high pressure regions.
Development of the Pressure-Sensitive Paint (PSP) Technique for Advanced Turbomachinery Applications
Author: Kelly R. Navarra
Publisher:
ISBN: 9781423549949
Category :
Languages : en
Pages : 92
Book Description
A new pressure measurement technique that employs the tools of molecular spectroscopy has recently received considerable attention in the community. Measurements are made via oxygen-sensitive molecules attached to the surface of interest as a coating, or paint. The pressure-sensitive paint (PSP) technique is now commonly used in stationary wind tunnel tests; this thesis presents extension of the technique to advanced turbomachinery applications. New pressure- and temperature-sensitive paints (TSPs) have been developed for application to a state-of-the-art compressor where pressures up to 2 atm and surface temperatures to 140 deg C are expected for the first stage rotor. PSP and TSP data images have been acquired from the suction surface of the first- stage rotor at 85 percent of the correct design speed for the compressor peak efficiency condition. The shock structure is clearly visible in the pressure image, and visual comparison to the corresponding computer prediction shows quantitative pressures similar to the PSP data. The measurement error is estimated to range from 0.36 kPa in low pressure regions to 4 kPa in high pressure regions.
Publisher:
ISBN: 9781423549949
Category :
Languages : en
Pages : 92
Book Description
A new pressure measurement technique that employs the tools of molecular spectroscopy has recently received considerable attention in the community. Measurements are made via oxygen-sensitive molecules attached to the surface of interest as a coating, or paint. The pressure-sensitive paint (PSP) technique is now commonly used in stationary wind tunnel tests; this thesis presents extension of the technique to advanced turbomachinery applications. New pressure- and temperature-sensitive paints (TSPs) have been developed for application to a state-of-the-art compressor where pressures up to 2 atm and surface temperatures to 140 deg C are expected for the first stage rotor. PSP and TSP data images have been acquired from the suction surface of the first- stage rotor at 85 percent of the correct design speed for the compressor peak efficiency condition. The shock structure is clearly visible in the pressure image, and visual comparison to the corresponding computer prediction shows quantitative pressures similar to the PSP data. The measurement error is estimated to range from 0.36 kPa in low pressure regions to 4 kPa in high pressure regions.
Pressure-Sensitive Paint Measurement Technique Development for Turbomachinery Application
Author: Kevin J. Quinn
Publisher:
ISBN: 9781423561156
Category :
Languages : en
Pages : 96
Book Description
Pressure-sensitive paint measurement on a transonic compressor rotor required the prior development of phase-locked cumulative imaging using a disk- rotor driven by a high-speed Hamilton-Standard turbine as a developmental test- bed. The turbine was installed in a protective housing in the Gas Dynamics Laboratory and connected to an 8000 cu ft, 300 psi air supply. An hydraulic pump provided bearing lubrication. A once per revolution trigger signal was produced from a light-emitting diode and PIN photodiode pair. The imaging system consisted of an intensified CCD video camera externally triggered by the 1/rev signal via a waveform shaping circuit designed for the present application. Images were captured at camera gate speeds calculated to eliminate pixel blur and image integration times were varied to optimize image intensity and spatial resolution. Structural and modal analyses of the disk-rotor were conducted and a simplified numerical model of the flow was computed. Ratioed, colored images were produced for wheel speeds to 20,000 RPM. The effect of the radially varying stagnation temperature was evident, underscoring the importance of quantifying and accounting for the PSP temperature sensitivity so that quantitative pressure data may be obtained. Recommendations for a follow-on program are reported.
Publisher:
ISBN: 9781423561156
Category :
Languages : en
Pages : 96
Book Description
Pressure-sensitive paint measurement on a transonic compressor rotor required the prior development of phase-locked cumulative imaging using a disk- rotor driven by a high-speed Hamilton-Standard turbine as a developmental test- bed. The turbine was installed in a protective housing in the Gas Dynamics Laboratory and connected to an 8000 cu ft, 300 psi air supply. An hydraulic pump provided bearing lubrication. A once per revolution trigger signal was produced from a light-emitting diode and PIN photodiode pair. The imaging system consisted of an intensified CCD video camera externally triggered by the 1/rev signal via a waveform shaping circuit designed for the present application. Images were captured at camera gate speeds calculated to eliminate pixel blur and image integration times were varied to optimize image intensity and spatial resolution. Structural and modal analyses of the disk-rotor were conducted and a simplified numerical model of the flow was computed. Ratioed, colored images were produced for wheel speeds to 20,000 RPM. The effect of the radially varying stagnation temperature was evident, underscoring the importance of quantifying and accounting for the PSP temperature sensitivity so that quantitative pressure data may be obtained. Recommendations for a follow-on program are reported.
Proceedings of the International Instrumentation Symposium
Author:
Publisher:
ISBN:
Category : Aerodynamic measurements
Languages : en
Pages : 600
Book Description
Publisher:
ISBN:
Category : Aerodynamic measurements
Languages : en
Pages : 600
Book Description
Use of Pressure Sensitive Paint for Diagnostics in Turbomachinery Flows With Shocks
Development of a Film-based Pressure-sensitive Paint Technique for Flight Testing
Author: Carlos A. Fuentes
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 70
Book Description
Publisher:
ISBN:
Category : Aerodynamic load
Languages : en
Pages : 70
Book Description
Pressure and Temperature Sensitive Paints
Author: Tianshu Liu
Publisher: Springer Science & Business Media
ISBN: 3540266445
Category : Technology & Engineering
Languages : en
Pages : 331
Book Description
Luminescent molecule sensors, called pressure-sensitive paint (PSP) and temperature-sensitive paint (TSP), measure factors essential for understanding the aerodynamic performance and heat transfer characteristics of flight vehicles. They provide a powerful tool for experimental aerodynamicists to obtain a deeper understanding of the rich physical phenomena in complex flows around a flight vehicle. This book helps the reader to understand the physics and chemistry and the capabilities of PSP and TSP. It provides an overview of the wide scope of applications and explains the system requirements for using these sensors. The book also includes an extensive table of properties of PTP and TSP. As such, it is a thorough and up-to-date coverage of the underlying physics and applications of luminescent molecules designed for global pressure and temperature mapping
Publisher: Springer Science & Business Media
ISBN: 3540266445
Category : Technology & Engineering
Languages : en
Pages : 331
Book Description
Luminescent molecule sensors, called pressure-sensitive paint (PSP) and temperature-sensitive paint (TSP), measure factors essential for understanding the aerodynamic performance and heat transfer characteristics of flight vehicles. They provide a powerful tool for experimental aerodynamicists to obtain a deeper understanding of the rich physical phenomena in complex flows around a flight vehicle. This book helps the reader to understand the physics and chemistry and the capabilities of PSP and TSP. It provides an overview of the wide scope of applications and explains the system requirements for using these sensors. The book also includes an extensive table of properties of PTP and TSP. As such, it is a thorough and up-to-date coverage of the underlying physics and applications of luminescent molecules designed for global pressure and temperature mapping
Advanced Non-intrusive Instrumentation for Propulsion Engines
Author: North Atlantic Treaty Organization. Advisory Group for Aerospace Research and Development. Propulsion and Energetics Panel. Symposium
Publisher: North Atlantic Treaty Organization Resear Rganization
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 554
Book Description
Publisher: North Atlantic Treaty Organization Resear Rganization
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 554
Book Description
Development of a Film-based Pressure Sensitive Paint Technique
Application of the Pressure Sensitive Paint Technique to the Turbomachinery Environment
Author: Patrick Steiner
Publisher:
ISBN:
Category : Paint
Languages : en
Pages : 110
Book Description
Publisher:
ISBN:
Category : Paint
Languages : en
Pages : 110
Book Description