Results 81 to 90 of about 9,113 (233)

Numerical Simulation of a Vortex Combustor Based on Aluminum and Steam

open access: yesEnergies, 2016
In this paper we report a new development in the numerical model for aluminum-steam combustion. This model is based on the diffusion flame of the continuum regime and the thermal equilibrium between the particle and the flow field, which can be used to ...
Xianhe Chen   +3 more
doaj   +1 more source

Configuration development study of the X-24C hypersonic research airplane [PDF]

open access: yes
Bottom line results were made of a three-phase study to determine the feasibility of designing, building, and operating, and maintaining an air-launched high performance aircraft capable of cruising at speeds up to Mach 8 for short durations. The results
Campbell, D. H.   +9 more
core   +1 more source

Ramjet Compression System for a Hypersonic Air Transportation Vehicle Combined Cycle Engine

open access: yesEnergies, 2018
This report assesses the performance characteristics of a ramjet compression system in the application of a hypersonic vehicle. The vehicle is required to be self-powered and perform a complete flight profile using a combination of turbojet, ramjet and ...
Sasha Veeran   +2 more
doaj   +1 more source

Flowfield measurements in a model scramjet combustion using laser-induced iodine fluorescence [PDF]

open access: yes
Preliminary designs were completed for an iodine mixing chamber and the optical setup to be used with a modified wind tunnel in obtaining accurate, spatially resolved measurements of variables in the flowfield of a model nonreacting scramjet combustor ...
Mcdaniel, J. C., Jr.
core   +1 more source

Rocket Based Combined Cycle (RBCC) Propulsion Technology Workshop. Volume 1: Executive summary [PDF]

open access: yes
The goal of the Rocket-Based Combined Cycle (RBCC) Propulsion Technology Workshop was to assess the RBCC propulsion system's viability for Earth-to-Orbit (ETO) transportation systems.
Chojnacki, Kent T.
core   +1 more source

Simulation of a hydrocarbon fueled scramjet exhaust [PDF]

open access: yes
Exhaust nozzle flow fields for a fully integrated, hydrocarbon burning scramjet were calculated for flight conditions of M (undisturbed free stream) = 4 at 6.1 km altitude and M (undisturbed free stream) = 6 at 30.5 km altitude.
Leng, J.
core   +1 more source

Transatmospheric vehicle research [PDF]

open access: yes
Research was conducted into the alternatives to the supersonic combustion ramjet (scramjet) engine for hypersonic flight. A new engine concept, the Oblique Detonation Wave Engine (ODWE) was proposed and explored analytically and experimentally.
Adelman, Henry G., Cambier, Jean-Luc
core   +1 more source

Influence of helix angle on heat transfer characteristics of regenerative cooling in spiral channel

open access: yesCase Studies in Thermal Engineering
A rapid solution method for spiral line and a one-dimensional (1-D) heat transfer calculation model for spiral regenerative cooling channels (RCCs) are proposed to clarify the influence of the helix angle on the heat transfer characteristics of spiral ...
Xinlin Liu   +4 more
doaj   +1 more source

Viscous computations of cold air/air flow around scramjet nozzle afterbody [PDF]

open access: yes
The flow field in and around the nozzle afterbody section of a hypersonic vehicle was computationally simulated. The compressible, Reynolds averaged, Navier Stokes equations were solved by an implicit, finite volume, characteristic based method.
Baysal, Oktay, Engelund, Walter C.
core   +1 more source

Multiple-scale turbulence modeling of boundary layer flows for scramjet applications [PDF]

open access: yes
As part of an investigation into the application of turbulence models to the computation of flows in advanced scramjet combustors, the multiple-scale turbulence model was applied to a variety of flowfield predictions.
Edelman, R. B.   +2 more
core   +1 more source

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