Results 51 to 60 of about 16,840 (258)

A Review of Research on the Thermo‐Force Characteristics of Scramjet Engine Wall Based on Neural Networks

open access: yesInternational Journal of Energy Research, Volume 2025, Issue 1, 2025.
With the development of high‐performance computing and advanced experimental methods, data‐driven machine learning, especially neural network technology, has shown great potential in fluid mechanics research and has become a fourth paradigm research tool.
Chen Qi   +6 more
wiley   +1 more source

Numerical Study of Disturbance Resistance of Oblique Detonation Waves

open access: yesInternational Journal of Aerospace Engineering, 2020
The stability of oblique detonation waves (ODWs) is a fundamental problem, and resistance of ODWs against disturbances is crucial for oblique detonation engines in high-speed propulsion. In this work, numerical studies on ODW stability in disturbed flows
Yu Liu, Baoguo Xiao, Lan Wang, Chao Wang
doaj   +1 more source

Three-dimensional characteristics of crossing shock wave/turbulent boundary layer interaction in a double fin with and without micro-ramp control

open access: yesAIP Advances, 2022
The three-dimensional (3D) interactions between crossing shock waves and a turbulent boundary layer (CSWBLI) inside a symmetric double fin are experimentally studied using nanoparticle-based planar laser scattering, supersonic particle image velocimetry,
Lican Wang   +5 more
doaj   +1 more source

Assessing the Sustainability of Liquid Hydrogen for Future Hypersonic Aerospace Flight

open access: yesAerospace, 2022
This study explored the applications of liquid hydrogen (LH2) in aerospace projects, followed by an investigation into the efficiency of ramjets, scramjets, and turbojets for hypersonic flight and the impact of grey, blue, and green hydrogen as an ...
Abdalrahman Khaled Mohammad   +4 more
doaj   +1 more source

A Review on High‐Speed Electromagnetic Flow Control and Applications Considering Numerical Methods, Simulations, and Experimental Research Data

open access: yesInternational Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
Background: Electromagnetic flow control is crucial in hypersonic gas dynamics, with key aspects of boundary layer electromagnetic flow control reviewed, focusing on numerical methods, simulations, and experimental research. Numerical Methods: Challenges such as numerical stiffness and instability arise from the coupling of electromagnetic fields with ...
Yang Du, Jun Liu, Hao Chen
wiley   +1 more source

Numerical Investigation of Droplet Properties of a Liquid Jet in Supersonic Crossflow

open access: yesInternational Journal of Aerospace Engineering, 2021
The atomization process of a liquid jet in supersonic crossflow with a Mach number of 1.94 was investigated numerically under the Eulerian-Lagrangian scheme. The droplet stripping process was calculated by the KH (Kelvin-Helmholtz) breakup model, and the
Yu-Qi Wang   +3 more
doaj   +1 more source

Overall Heat Transfer Coefficient Evaluation Method for Uncracked Hydrocarbon Fuel in a Regeneratively-Cooled Heat Exchanger of a Scramjet

open access: yesApplied Sciences, 2022
Regenerative cooling is critical for the thermal protection of hypersonic propulsion systems, wherein the flow and heat transfer characteristics of the hydrocarbon fuel in the cooling channel are crucial.
Haowei Li   +4 more
doaj   +1 more source

Fuel Reactivity Controlled Autoignition and Combustion Characteristics in a Supersonic Combustor With Different Turbulence Models

open access: yesInternational Journal of Aerospace Engineering, Volume 2025, Issue 1, 2025.
The choice of turbulence model significantly impacts the prediction of the supersonic combustion flow field. In this study, the transient autoignition process and steady supersonic combustion performance of methane fuel with adjustable reactivity in a scramjet combustor were numerically investigated, employing different turbulence models including ...
Zihan Wang   +6 more
wiley   +1 more source

Parametric Study of Fuel Distribution Effects on a Kerosene-Based Scramjet Combustor

open access: yesInternational Journal of Aerospace Engineering, 2016
Generally, the overall performance of scramjet combustor is greatly impacted by the fuel distribution scheme. The current paper mainly conducted a comprehensive parametric study of the impact of fuel distribution on the overall performance of a kerosene ...
Jun Yang, Xian-yu Wu, Zhen-guo Wang
doaj   +1 more source

Structural evolution and oxidation resistance of polysilazane‐derived SiCN–HfO2 ceramics

open access: yesJournal of the American Ceramic Society, Volume 107, Issue 3, Page 1657-1668, March 2024.
Abstract Polymer‐derived SiCN materials have great application potential in high‐temperature environments. In the current work, SiCN ceramics were tailored with Hf incorporation through doping of a molecular precursor in the preceramic polymer. The ceramics remained in a single amorphous phase up to 900°C.
Rahul Anand   +3 more
wiley   +1 more source

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