Author: Joseph A. SchetzPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 8
Book Description
Analysis of the Mixing and Combustion of Gaseous and Particle-laden Jets in an Air Stream
Author: Joseph A. SchetzPublisher:
ISBN:
Category : Airplanes
Languages : en
Pages : 8
Book Description
Direct Mixing and Combustion Measurements in Ducted, Particle-Laden Jets
Author: Steven W. AbbottPublisher:
ISBN:
Category :
Languages : en
Pages : 13
Book Description
Using water-cooled probes and hot-gas valves, gas-particle samples were withdrawn from the secondary duct of an air-augmented laboratory burner. Using a boron-loaded propellant, air/fuel ratio and secondary duct pressure were varied from 12/1 to 32/1 and from 82 to 127 psia respectively. From sample analysis of chlorine, argon (air tracer), boron, and boron oxide, radial and axial profiles of air, gaseous fuel, particulate fuel and percent of boron combustion were determined. Particles and gases mixed at significantly different rates. Measured gas-phase mixing rates were more rapid than model predictions, which assumed particles to be in equilibrium with gases. Boron combustion efficiency varied markedly with duct position, air/fuel ratio and secondary chamber pressure. (Author).
Particle Dynamics During Mixing and Combustion of a Ducted Particle-laden Primary Jet with a Secondary Air Stream
Author: Gregory Scott AndersonPublisher:
ISBN:
Category : Combustion
Languages : en
Pages : 178
Book Description
Mixing and Combustion Processes in Air Breathing Propulsion Systems
Author: L. Douglas SmootPublisher:
ISBN:
Category :
Languages : en
Pages : 165
Book Description
The general objectives of this study were to provide predictive techniques for air-breathing, particle-laden combustors and experimental data on rates of combustion and/or mixing of particle-laden jets. Jet mixing model predictions were compared with experiments reported in the literature. This led to the development of a turbulent mixing coefficient that improved predictions for systems with nonzero secondary velocity and gave reasonable predictions for reacting jets. The mixing model was extended to include boron particle nonequilibrium effects. Several predictions with this uncoupled model are also shown. A fully coupled turbulent jet mixing model was developed for a nonreacting, particle-gas system. Tests were made using a laboratory air-augmented combustor and a boron-loaded fuel. Mixing rates of particles and of gases were measured, as was extent of combustion of the boron particles. Tests were made using a new jet test facility for measuring mixing rates of particle-laden, nonreacting jets. Mixing rates of particles and gases were separately measured. Particle size, jet density and air velocity were systematically varied. (Modified author abstract).
AIAA 71-1 - AIAA 71-40
Author: A Collection of Technical Papers
Author: Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 1028
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
International aerospace abstracts
Author: ERDA Energy Research Abstracts
Author: United States. Energy Research and Development AdministrationPublisher:
ISBN:
Category : Power resources
Languages : en
Pages : 1108
Book Description
Investigation of the Mixing and Combustion of Turbulent, Compressible Free Jets
Author: Leonard S. CohenPublisher:
ISBN:
Category : Air jets
Languages : en
Pages : 108
Book Description