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Artificial Diffusion, Upwind Biasing, Limiters and their Effect on Accuracy and Multigrid Convergence in Transonic and Hypersonic Flows
Artificial Diffusion, Upwind Biasing, Limiters Accuracy Multigrid Convergence Transonic Hypersonic Flows
2015/7/1
The theory of non-oscillatory scalar schemes is developed in this paper in terms of the local extremum diminishing (LED) principle that maxima should not increase and minima should not decrease.
Artificial Sun synchronous frozen orbit control scheme design based on J2 perturbation
ontinuous low-thrust Artificial Sun synchronous orbit Artificial frozen orbit Gauss’ variation of parameters equations Mean element method
2012/2/29
Sun synchronous orbit and frozen orbit formed due to $J_{2}$ perturbation have very strict constraints on orbital parameters, which have restricted the application a lot. In this paper, several contro...
The pull of artificial gravity（图）
artificial gravity the International Space Station physiological research
2010/4/21
Although President Obama’s vision for NASA’s future calls for canceling the Constellation program that was intended to send humans to the moon by 2020, his proposed budget for the agency still holds o...