Results 21 to 30 of about 167,915 (386)
Advances in Aerodynamics, 2019 How to solve the hypersonic aerothermodynamics around large-scale uncontrolled spacecraft during falling disintegrated process from outer space to earth, is the key to resolve the problems of the uncontrolled Tiangong-No.1 spacecraft reentry crash.
Zhi-Hui Li +5 more
doaj +1 more source
Advances in Aerodynamics, 2021 In order to visualize the rarefied flow field in a Φ1m hypersonic low-density wind tunnel, an electric glow discharge technique based on high frequency excited power has been developed.
Wanqiu Jiang +7 more
doaj +1 more source
Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences, 2014 We study the trajectory of dense projectiles subjected to gravity and drag at large Reynolds number. We show that two types of trajectories can be observed: if the initial velocity is smaller than the terminal velocity of free fall, we observe the classical Galilean parabola: if it is larger, the projectile decelerates with an asymmetric trajectory ...
Cohen, Caroline +5 more
openaire +4 more sources
Urban heat island: Aerodynamics or imperviousness?
Science Advances, 2019 Vegetation and moisture play the most important roles in controlling daytime urban heat islands and their spatial variability. More than half of the world’s population now live in cities, which are known to be heat islands.
Dan Li +6 more
semanticscholar +1 more source
From primary instabilities to secondary instabilities in Görtler vortex flows
Advances in Aerodynamics, 2019 We have studied the transformation process from primary instabilities to secondary instabilities with direct numerical simulations and stability theories (Spatial Biglobal and plane-marching parabolized stability equations) in detail. First Mack mode and
Xi Chen +4 more
doaj +1 more source
A decomposition formula for the wall heat flux of a compressible boundary layer
Advances in Aerodynamics, 2021 Understanding the generation mechanism of the heat flux is essential for the design of hypersonic vehicles. We proposed a novel formula to decompose the heat flux coefficient into the contributions of different terms by integrating the conservative ...
Dong Sun +5 more
doaj +1 more source
Simulation of tail boom vibrations using main rotor-fuselage Computational Fluid Dynamics (CFD) [PDF]
, 2017 In this work, fully-resolved rotor-fuselage interactional aerodynamics is used as the forcing term in a model based on the Euler-Bernoulli equation, aiming to simulate helicopter tail-boom vibration.
Barakos, George N. +4 more
core +2 more sources
, 2021 Diabolo is a popular game in which the object can be spun at up to speeds of 5000 rpm. This high spin velocity gives the diabolo the necessary angular momentum to remain stable. The shape of the diabolo generates an interesting air flow pattern. The viscous air applies a resistive torque on the fast spinning diabolo.
openaire +4 more sources
Journal of High Energy Physics, 2022 Abstract In this work we analyse the potential for a warp drive spacetime to develop instabilities due to the presence of quantum matter. Particularly, we look for points of infinite blueshift (which are analogous to points of a black hole inner horizon, known for its semiclassical instability), and categorise them through the ...
Carlos Barceló +4 more
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Review of research on high-speed railway aerodynamics in China
Transportation Safety and Environment, 2019 High-speed railway aerodynamics is the key basic science for solving the bottleneck problem of high-speed railway development. This paper systematically summarizes the aerodynamic research relating to China’s high-speed railway network.
H. Tian
semanticscholar +1 more source