Results 71 to 80 of about 4,525 (199)
Numerical investigation on the crosswind effects on a train running on a bridge
Engineering Applications of Computational Fluid Mechanics, 2020 With the increase of the running speed of the high-speed train (HST), aerodynamic interference between the HST and surrounding structures becomes more and more important. Traditional wind tunnel experiments using the stationary model can not fully reveal
Simin Zou, Xuhui He, Hanfeng Wang
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Turbulent plumes in a uniform crosswind
, 2020 Direct numerical simulation is used to investigate the integral behaviour of buoyant plumes subjected to a uniform crosswind. We find that the plume centreline is not aligned with the streamlines as is commonly assumed in integral plume models. Instead, the centreline is aligned with the total buoyancy flux, which implies that a model for the vertical ...
openaire +2 more sources
A Plume Tracking Algorithm Based on Crosswind Formations [PDF]
, 2013 We introduce a plume tracking algorithm based on robot formations. The algorithm is inherently designed for multi-robot systems, and requires at least two robots to collaborate. The robots try to keep themselves centered around the plume while moving upwind towards the source, and share their odor concentration and wind direction measurements with each
Thomas Lochmatter +3 more
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Formation of a fire whirl behind an L-shaped wall
Journal of Thermal Science and TechnologyCrosswind-induced fire whirl generation and development are investigated in this study, with particular emphasis on the effects of crosswind velocity, wind direction, and fuel mass loss rate on flame height and heat release behavior.
Nurul Al RAJIB, Kazunori KUWANA
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Wind Tunnel Testing on Crosswind Aerodynamic Forces Acting on Railway Vehicles
Journal of Fluid Science and Technology, 2010 This study is devoted to measure the aerodynamic forces acting on two railway trains, one of which is a high-speed train at 300km/h maximum operation speed, and the other is a conventional train at the operating speed 100km/h. The three-dimensional train
Hyeok-bin KWON +2 more
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Aerospace, 2015 This numerical study focuses on the fire phenomenology associated with the presence of a composite-type aircraft immersed, at one particular location and orientation, within a large aviation-fuel fire in a moving fluid medium.
Hui Ying Wang, Guo Da Wang
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Integration of crosswind forces into train dynamic modelling [PDF]
, 2011 In this paper a new method is used to calculate unsteady wind loadings acting on a railway vehicle. The method takes input data from wind tunnel testing or from computational fluid dynamics simulations (one example of each is presented in this article ...
G Xie +14 more
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Aerodynamic force and moment measurement for crosswind stability assessment in a compact wind tunnel
Mechanical Engineering Journal, 2017 Rolling stock is sensitive to crosswind because of its large side area, so crosswind stability must be assessed when rolling stock is developed. In the European Union, aerodynamic force and moment under crosswind need to be measured in a wind tunnel ...
Akitoshi MATSUI +2 more
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Applications in Energy and Combustion ScienceFlares are critical for the safe destruction of waste gases and must operate effectively over a broad range of conditions. Even at low gas flow rates, the flames created by flares are highly turbulent and exhibit significant transient behavior, yet few ...
Margaret S. Wooldridge +3 more
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Kapitel 3.1 Crosswind Operations [PDF]
, 2015 : Crosswind operations rely on the simple effect that sufficiently strong crosswinds may transport wake vortices out of the flight corridor which may support temporary suspension of the need to apply wake turbulence separations between successive ...
Choroba, Peter, Holzäpfel, Frank
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