Results 1 to 10 of about 16,840 (258)

Characteristics of Flow Development and Boiling Transitions in the Liquid Oxygen Chill-Down Process in a Straight Horizontal Exit-Contracted Pipe

open access: yesInternational Journal of Aerospace Engineering, 2023
Liquid oxygen chill-down in a straight horizontal pipe was studied experimentally. The effect of the entrance corner was excluded, and much denser wall temperature sensors along the pipe have been set compared to the present studies.
Lanwei Chen, Jiaqi Zhang
doaj   +2 more sources

Investigations on the Influence of the In-Stream Pylon and Strut on the Performance of a Scramjet Combustor [PDF]

open access: yesThe Scientific World Journal, 2014
The influence of the in-stream pylon and strut on the performance of scramjet combustor was experimentally and numerically investigated. The experiments were conducted with a direct-connect supersonic model combustor equipped with multiple cavities.
Hao Ouyang, Weidong Liu, Mingbo Sun
doaj   +2 more sources

Direct-Connect Test of Solid Scramjet with Symmetrical Structure

open access: yesEnergies, 2021
The solid scramjet has become one of the most promising engine types. In this paper, we report the first direct-connect test of a solid scramjet with symmetrical structure, carried out using boron-based fuel-rich solid propellant as fuel. During the test,
Pengnian Yang   +6 more
doaj   +1 more source

Numerical Investigation of Contact Burning in an Air-Breathing Continuous Rotating Detonation Engine

open access: yesInternational Journal of Aerospace Engineering, 2022
Three-dimensional (3D) numerical simulations of a continuous rotating detonation engine are carried out with an unsteady Reynolds-averaged Navier-Stokes solver.
Dapeng Xiong   +7 more
doaj   +1 more source

Fill-In and Boiling Transition Characteristics during the Liquid Oxygen Chill-Down Process in a Vertical Exit-Contracted Pipe

open access: yesInternational Journal of Aerospace Engineering, 2022
Liquid oxygen chill-down in a vertical exit-contracted pipe was investigated experimentally. The wall temperatures were recorded in detail to describe the filling and chill-down process of the experimental section.
Jiaqi Zhang, Ke Wang, Lanwei Chen
doaj   +1 more source

Experimental Study of the Formation and Evolution of Gas Jets in Supersonic Combustion Chambers

open access: yesApplied Sciences, 2023
A simple and efficient flow field visualization method (based on shadow imaging) was applied in a direct-connect test to explore the influence of the momentum flux ratio and the jet angle on the formation and evolution of nitrogen jets in supersonic ...
Yifan Duan   +6 more
doaj   +1 more source

Design method of supercritical hydrocarbon fuel injection for a scramjet

open access: yesAdvances in Aerodynamics, 2022
Both the fuel transfer control scheme and the knowledge of fuel temperature and pressure values before injection are important to a scramjet engine.
Lei Zhang   +3 more
doaj   +1 more source

Effect of Fuel-Injection Distance and Cavity Rear-Wall Height on the Flameholding Characteristics in a Mach 2.52 Supersonic Flow

open access: yesAerospace, 2022
The ethylene-fueled flameholding characteristics of a cavity-based scramjet combustor are experimentally and numerically investigated. The test facility used the air heater, which heats air from room temperature to total temperature 1477 K.
Zhonghao He   +5 more
doaj   +1 more source

Mechanism of development of turbulent boundary layer in a curved circular pipe under supersonic conditions

open access: yesAIP Advances, 2022
This study investigates the characteristics of a turbulent boundary layer in a curved circular pipe under an inflow of Ma = 3.0. The pipe consisted of a straight part and a curved part with a turning angle of 36° and a radius of curvature, γ = R/Rc, of γ
Chang-Hai Liang   +8 more
doaj   +1 more source

Numerical Investigation of an Axisymmetric Model Scramjet Assisted with Cavity of Different Aft Wall Angles

open access: yesInternational Journal of Aerospace Engineering, 2021
An axisymmetric model scramjet assisted with cavity flameholder is numerically investigated. Three-dimensional Reynolds-averaged Navier-Stokes simulation is carried out to reveal the fuel mixing and combustion characteristics. The simulation results show
Guangwei Ma   +6 more
doaj   +1 more source

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