Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Cavity-based fuel injection and flame holding, typically found in hydrocarbon-fueled scramjet applications, are of current interest for use in supersonic combustors. The Air Force Research Lab (AFRL) and the Air Force Institute of Technology (AFlT) are investigating the enhancement of fuel-air mixing with small pylons that project into the supersonic flow upstream of a flame holder. The pylons were of three sizes and were shaped as a thin triangular wedge with a 300 inclination angle. Four configurations (pylons plus baseline) were tested at two different fuel injection pressures in a Mach continuous flow wind tunnel housed at AFRL. The goal was to measure the mixing efficiency and shock loss of each pylon setup for comparison to the baseline condition of transverse injection without pylons. Intrusive and non intrusive techniques were used to obtain pitot pressure, total temperature, cone-static pressure, and laser induced Raman spectroscopy to determine species concentration over the cavity downstream of the injection port. Results showed that pylons increase fuel penetration, while not adding significantly to shock losses or overall mixing.
Performance of Pylons Upstream of a Cavity-Based Flameholder in Non-Reacting Supersonic Flow (Postprint).
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Cavity-based fuel injection and flame holding, typically found in hydrocarbon-fueled scramjet applications, are of current interest for use in supersonic combustors. The Air Force Research Lab (AFRL) and the Air Force Institute of Technology (AFlT) are investigating the enhancement of fuel-air mixing with small pylons that project into the supersonic flow upstream of a flame holder. The pylons were of three sizes and were shaped as a thin triangular wedge with a 300 inclination angle. Four configurations (pylons plus baseline) were tested at two different fuel injection pressures in a Mach continuous flow wind tunnel housed at AFRL. The goal was to measure the mixing efficiency and shock loss of each pylon setup for comparison to the baseline condition of transverse injection without pylons. Intrusive and non intrusive techniques were used to obtain pitot pressure, total temperature, cone-static pressure, and laser induced Raman spectroscopy to determine species concentration over the cavity downstream of the injection port. Results showed that pylons increase fuel penetration, while not adding significantly to shock losses or overall mixing.
Publisher:
ISBN:
Category :
Languages : en
Pages : 22
Book Description
Cavity-based fuel injection and flame holding, typically found in hydrocarbon-fueled scramjet applications, are of current interest for use in supersonic combustors. The Air Force Research Lab (AFRL) and the Air Force Institute of Technology (AFlT) are investigating the enhancement of fuel-air mixing with small pylons that project into the supersonic flow upstream of a flame holder. The pylons were of three sizes and were shaped as a thin triangular wedge with a 300 inclination angle. Four configurations (pylons plus baseline) were tested at two different fuel injection pressures in a Mach continuous flow wind tunnel housed at AFRL. The goal was to measure the mixing efficiency and shock loss of each pylon setup for comparison to the baseline condition of transverse injection without pylons. Intrusive and non intrusive techniques were used to obtain pitot pressure, total temperature, cone-static pressure, and laser induced Raman spectroscopy to determine species concentration over the cavity downstream of the injection port. Results showed that pylons increase fuel penetration, while not adding significantly to shock losses or overall mixing.
Design and Analysis of Cavity-Based Flameholder Using in Supersonic Combustion Flow
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Book Description
The Aerodynamics of Heavy Vehicles III
Author: Andreas Dillmann
Publisher: Springer
ISBN: 3319201220
Category : Technology & Engineering
Languages : en
Pages : 416
Book Description
This volume contains papers presented at the International conference “The Aerodynamics of Heavy Vehicles III: Trucks, Buses and Trains” held in Potsdam, Germany, September 12-17, 2010 by Engineering Conferences International (ECI). Leading scientists and engineers from industry, universities and research laboratories, including truck and high-speed train manufacturers and operators were brought together to discuss computer simulation and experimental techniques to be applied for the design of more efficient trucks, buses and high-speed trains in the future. This conference was the third in the series after Monterey-Pacific Groove in 2002 and Lake Tahoe in 2007.The presentations address different aspects of train aerodynamics (cross wind effects, underbody flow, tunnel aerodynamics and aeroacoustics, experimental techniques), truck aerodynamics (drag reduction, flow control, experimental and computational techniques) as well as computational fluid dynamics and bluff body, wake and jet flows.
Publisher: Springer
ISBN: 3319201220
Category : Technology & Engineering
Languages : en
Pages : 416
Book Description
This volume contains papers presented at the International conference “The Aerodynamics of Heavy Vehicles III: Trucks, Buses and Trains” held in Potsdam, Germany, September 12-17, 2010 by Engineering Conferences International (ECI). Leading scientists and engineers from industry, universities and research laboratories, including truck and high-speed train manufacturers and operators were brought together to discuss computer simulation and experimental techniques to be applied for the design of more efficient trucks, buses and high-speed trains in the future. This conference was the third in the series after Monterey-Pacific Groove in 2002 and Lake Tahoe in 2007.The presentations address different aspects of train aerodynamics (cross wind effects, underbody flow, tunnel aerodynamics and aeroacoustics, experimental techniques), truck aerodynamics (drag reduction, flow control, experimental and computational techniques) as well as computational fluid dynamics and bluff body, wake and jet flows.
Abstracts of the 1971-1974 United States and Foreign Open Literature on Noise
Author: E. P. Bergman
Publisher:
ISBN:
Category : Noise
Languages : en
Pages : 488
Book Description
Publisher:
ISBN:
Category : Noise
Languages : en
Pages : 488
Book Description
Airports: Challenges of the Future
Author: American Society of Civil Engineers. Air Transport Division
Publisher:
ISBN:
Category : Transportation
Languages : en
Pages : 238
Book Description
Publisher:
ISBN:
Category : Transportation
Languages : en
Pages : 238
Book Description
EPA 600/2
Author:
Publisher:
ISBN:
Category : Environmental engineering
Languages : en
Pages : 900
Book Description
Publisher:
ISBN:
Category : Environmental engineering
Languages : en
Pages : 900
Book Description
Environmental Health Effects Research Series
Author:
Publisher:
ISBN:
Category : Pollutants
Languages : en
Pages : 44
Book Description
Publisher:
ISBN:
Category : Pollutants
Languages : en
Pages : 44
Book Description
Critical Phenomena in Alloys, Magnets, and Superconductors
Author: Roger E. Mills
Publisher: McGraw-Hill Companies
ISBN:
Category : Science
Languages : en
Pages : 712
Book Description
Publisher: McGraw-Hill Companies
ISBN:
Category : Science
Languages : en
Pages : 712
Book Description
Ozone in Water and Wastewater Treatment
Author: Francis L. Evans
Publisher: Butterworth-Heinemann
ISBN:
Category : Science
Languages : en
Pages : 208
Book Description
Publisher: Butterworth-Heinemann
ISBN:
Category : Science
Languages : en
Pages : 208
Book Description
Thermal Discharge, Engineering and Ecology
Author:
Publisher: Institution of Engineers
ISBN:
Category : Political Science
Languages : en
Pages : 158
Book Description
Publisher: Institution of Engineers
ISBN:
Category : Political Science
Languages : en
Pages : 158
Book Description