Results 21 to 30 of about 4,462 (234)

Effects of Chamber Width on H2/Air Rotating Detonations

International Journal of Aerospace Engineering, 2020
To get the effects of chamber width on the H2/Air rotating detonations, several models with different widths have been investigated. By using a one-step chemical reaction model, one wave is induced in all models.
Hailong Zhang, Weidong Liu, Lin Zhang, Shijie Liu, Luxin Jiang   +4 more
doaj   +1 more source

Quasi-One-Dimensional Model of Hydrocarbon-Fueled Scramjet Combustor Coupled with Regenerative Cooling

International Journal of Aerospace Engineering, 2022
In order to rapidly predict the performance of hydrocarbon-fueled regeneratively cooled scramjet engine in system design, a quasi-one-dimensional model has been developed.
Yuefei Xiong, Jiang Qin, Kunlin Cheng, Silong Zhang, Yu Feng   +4 more
doaj   +1 more source

An Improved Synthetic Eddy Method for Generating Inlet Turbulent Boundary Layers

Aerospace, 2022
An improved synthetic eddy method (SEM) is proposed in this paper for generating the boundary layer at the inlet of a computational domain via direct numerical simulation.
Dapeng Xiong, Yinxin Yang, Yanan Wang
doaj   +1 more source

Trajectory Optimization of a Partially Reusable Rocket–Scramjet–Rocket Launch System Including Fly-Back

, 2023
The integration of high-speed airbreathing engines into dedicated small satellite launchers may allow for some of the stages of the launch system to be reused, resulting in improved cost efficiency and turnaround times.
Jahn, Ingo H., Michael P. Kearney, Ingo H. Jahn, Alexander D. T. Ward, Ward, Alexander D. T., Smart, Michael K., Sholto O. Forbes-Spyratos, Forbes-Spyratos, Sholto O., Kearney, Michael P., Michael K. Smart   +9 more
core   +1 more source

Kernel‐based active subspaces with application to computational fluid dynamics parametric problems using the discontinuous Galerkin method

International Journal for Numerical Methods in Engineering, Volume 123, Issue 23, Page 6000-6027, 15 December 2022., 2022
Abstract Nonlinear extensions to the active subspaces method have brought remarkable results for dimension reduction in the parameter space and response surface design. We further develop a kernel‐based nonlinear method. In particular, we introduce it in a broader mathematical framework that contemplates also the reduction in parameter space of ...
Francesco Romor, Marco Tezzele, Andrea Lario, Gianluigi Rozza   +3 more
wiley   +1 more source

Comparison of Dual-Combustion Ramjet and Scramjet Performances Considering Combustion Efficiency

Applied Sciences, 2022
The performances of a dual-combustion ramjet (DCR) and a scramjet were compared via computational fluid dynamics numerical simulation to provide theoretical guidance for engine selection for a hypersonic vehicle.
Xianju Wu, Zhijun Wei
doaj   +1 more source

Effects of Additional Cavity Floor Injection on the Ignition and Combustion Processes in a Mach 2 Supersonic Flow

Energies, 2020
Effects of additional cavity floor injection on the ethylene ignition and combustion processes in a cavity-based scramjet combustor are investigated experimentally in a Mach 2.0 supersonic flow using flame luminosity and CH* (CH radical) spontaneous ...
Fan Li, Mingbo Sun, Zun Cai, Yong Chen, Yongchao Sun, Fei Li, Jiajian Zhu   +6 more
doaj   +1 more source

Rate Constants and Energetics of the H₂SiO + H Reaction System: RP-VTST/MT and VRC Calculations. [PDF]

J Comput Chem
The decomposition of Silaformaldehyde (H2SiO) involves three reactions: H + H2SiO → H2 + HSiO (R1), H + H2SiO → H2SiOH (R2), and H + H2SiO → H3SiO (R3). Accurate energetics were calculated using ωB97X‐D and CCSD(T), and rate constants using CVT methods with multidimensional tunneling.
Pontes MAP, de Carvalho EFV, Ferrão LFA, Machado FBC, Roberto-Neto O.   +4 more
europepmc   +2 more sources

Thermal compression effects within a fundamental, hydrogen-fuelled scramjet

, 2021
The impact of thermal compression on combustion has been studied experimentally in a hydrogen-fuelled, non-uniform scramjet flowpath. The experimental model consisted of a three-dimensional inlet, a constant area rectangular combustor, and a single-ramp ...
Vanyai, Tristan, McIntyre, Timothy J., Brieschenk, Stefan, Bricalli, Mathew, Sopek, Tamara   +4 more
core   +1 more source

Influence of the Multicavity Shape on the Solid Scramjet

International Journal of Aerospace Engineering, 2021
In this paper, a modular solid scramjet combustor with multicavity was proposed. The influence of multicavity shape on the performance of solid scramjet was investigated by the direct-connected tests. The experiments simulated a flight Mach 5.5 at 25 km.
Pengnian Yang, Zhixun Xia, Likun Ma, BinBin Chen, Yunchao Feng, Chaolong Li, Libei Zhao   +6 more
doaj   +1 more source