Results 41 to 50 of about 30,241 (212)

Investigation on the Opposing Jet in the Hypersonic Rarefied Flow over a Vehicle Based on the DSMC Method

Actuators, 2022
In this paper, an opposing jet is applied to the space shuttle arc leading edge and the lifting body cone leading edge in the hypersonic condition of the rarefied flow field.
Yi Shen, Jun Zhang, Xiao Xu, Jing Liu, Zhaoming Zhang, Yanmei Jiao   +5 more
doaj   +1 more source

Numerical and Experimental Investigations of a Generic Rocket Launcher Configuration with Cold Plume in Hypersonic Flow [PDF]

, 2013
A generic rocket launcher geometry is studied experimentally and numerically at hypersonic flow conditions including a cold plume. The experiments are conducted in a hypersonic Ludwieg tube while numerical calculations are performed with a finite-volume
Oßwald, Kai, Radespiel, Rolf, Hannemann, Volker, Stephan, Sören, Hannemann, Klaus   +4 more
core  

Parametric study of flow and heat transfer characteristics in a regenerative cooling channel with crescent-shaped ribs under non-uniform heat flux

Results in Engineering
Regenerative cooling technology is key for scramjets to cope with extreme thermal loads during operation. Non-uniform heat flux, as an important feature of the propulsive combustion system, poses a serious challenge to the optimization of regenerative ...
Zechuan Yi, Taiyu Wang, Yifeng Yao, Peibo Li, Mingbo Sun, Jikai Chen, Bin An, Changhai Liang, Jiaoru Wang, Menglei Li, Yu Xie, Decong Zhang, Kai Yang, Qi Liu   +13 more
doaj   +1 more source

Mach 4 Simulating Experiment of Pre-Cooled Turbojet Engine Using Liquid Hydrogen

Aerospace, 2022
This study investigated a pre-cooled turbojet engine for a Mach 5 class hypersonic transport aircraft. The engine was demonstrated under takeoff and Mach 2 flight conditions, and a Mach 5 propulsion wind tunnel test is planned.
Hideyuki Taguchi, Kenya Harada, Hiroaki Kobayashi, Motoyuki Hongoh, Daisaku Masaki, Shunsuke Nishida   +5 more
doaj   +1 more source

Mechanochemical Engineered Sulfur Copolymers Onto Group 13 and Related Fillers Through Lewis Acid‐Base Pairing

Advanced Science, EarlyView.
Green mechanochemical copolymerization was developed for universal interfacial modification of Group 13 and related fillers. By leveraging Lewis acid–base coordination to anchor sulfur‐containing polymers—validated via multiscale characterization and DFT—this versatile method boosts performance across liquid fuels, thermal‐shielding materials, and ...
Chen Wang, Xiaoyang Shao, Zixuan Lei, Ruoqing Zhao, Xiaozhong Bao, Shuiping Zhou, Wen Ao, Zhenhua Wang   +7 more
wiley   +1 more source

Aerothermodynamics issues of the DLR hypersonic flight experiment SHEFEX-I [PDF]

, 2008
Here is presented an overview of the hypersonic experiment on sharp edge concepts, SHEFEX-I. The project, being performed under responsibility of the German Aerospace Center (DLR), is aimed to investigate the behavior and the possibilities of an improved
Eggers, Thino, Longo, Jose Maria, Barth, Tarik   +2 more
core  

Development of Automated Processes for Three-Dimensional Numerical Simulation of Compressor Performance Characteristics

Applied Sciences
Compressor characteristic evaluation is a critical step in design and optimization. Corrected characteristic curves are typically derived via experimental testing or CFD computation which is typically executed through manual manipulation. For compressors
Junbing Liu, Xiaoqiang Fan, Xiao Tang
doaj   +1 more source

Time‐Modulated Optomechanics Reveal Energy Flow and Inelastic Interactions Between Acoustic Phonons in Nanomembranes

Laser &Photonics Reviews, EarlyView.
Temporal interfaces are abrupt refractive index changes used in time‐varying optics, but also transitions to nonequilibrium states. This work explores the inelastic scattering of time‐varying light by nonthermal acoustic phonons in the vicinity of temporal interfaces.
Anuj Kumar Dhiman, Piotr Graczyk, Tobias Held, Mikolaj Pochylski, Kleoniki Sympoura, Rafal Bialek, Jacek Gapinski, Bahram Djafari Rouhani, Baerbel Rethfeld, Bartlomiej Graczykowski, Thomas Vasileiadis   +10 more
wiley   +1 more source

Designing Flight Experiments for Hypersonic Flow Physics [PDF]

, 2005
A major problem of concen for the success of physical-modelling resides in the availability of experimental data for model validation, particularly in the hot hypersonic regime.
Gülhan, A., Turner, J., Weihs, H., Eggers, Th., Longo, J.M.A.   +4 more
core  

Performance modeling of flame-assisted fuel cells based on a swirl burner

AIP Advances
Aiming at the problems of a narrow operating range and complex modeling of Flame-assisted Fuel Cells (FFCs), an FFC system based on a swirl burner is proposed, and neural network algorithms are used to construct the prediction model for the polarization ...
Yiming Liu, Jianguo Tan, Zihan Kuai, Dongdong Zhang, Yao Liu   +4 more
doaj   +1 more source