Results 21 to 30 of about 2,192,114 (314)

Traffic Networks and Flows over Time [PDF]

open access: yes, 2009
In view of the steadily growing car traffic and the limited capacity of our street networks, we are facing a situation where methods for better traffic management are becoming more and more important. Studies show that an individual „blind“ choice of routes leads to travel times that are between 6 % and 19 % longer than necessary.
Ekkehard Köhler   +2 more
openaire   +1 more source

A Stackelberg strategy for routing flow over time [PDF]

open access: yesGames and Economic Behavior, 2011
Routing games are used to to understand the impact of individual users' decisions on network efficiency. Most prior work on routing games uses a simplified model of network flow where all flow exists simultaneously, and users care about either their maximum delay or their total delay.
Umang Bhaskar   +2 more
openaire   +4 more sources

Effect of Surface Morphological Changes on Flow Over a Sphere [PDF]

open access: yes, 2010
An experimental investigation was undertaken to examine the effect of a morphing surface on the flow over a sphere in the Reynolds number range of 5x10⁴ to 5x10⁵. Here, a morphing surface is defined as a continuous surface that undergoes small amplitude
Norman, Adam Keith
core   +1 more source

Experimental study of time-averaged flow and turbulence over asymmetric tidal dunes [PDF]

open access: yesEarth Surface Dynamics
Asymmetric tidal dunes with intermediate (10–17°) to low-angle slopes (< 10°), usually with an irregularly-shaped lee side, are often found in natural, constrained tidal environments such as tidal rivers, estuaries and tidal channels.
K. Bobiles   +8 more
doaj   +1 more source

Analytical Investigation of the Time-Dependent Stagnation Point Flow of a CNT Nanofluid over a Stretching Surface

open access: yesNanomaterials, 2022
The heat transfer ratio has an important role in industry and the engineering sector; the heat transfer ratios of CNT nanofluids are high compared to other nanofluids.
Ali Rehman   +4 more
doaj   +1 more source

Change in drag, apparent slip and optimum air layer thickness for laminar flow over an idealised superhydrophobic surface [PDF]

open access: yes, 2013
Analytic results are derived for the apparent slip length, the change in drag and the optimum air layer thickness of laminar channel and pipe flow over an idealised superhydrophobic surface, i.e. a gas layer of constant thickness retained on a wall.
Newton, M.I.   +13 more
core   +1 more source

Time varying flow over mountains: temperature perturbations at the surface

open access: yesMeteorologische Zeitschrift, 2009
It is shown that the linearized potential temperature perturbation equation at the surface can be solved analytically for time dependent mean flow over a two dimensional mountain. This solution is discussed briefly for the situation without damping where
Joseph Egger
doaj   +1 more source

Unsteady axisymmetric flow and heat transfer over time-dependent radially stretching sheet

open access: yesAlexandria Engineering Journal, 2017
This article address the boundary layer flow and heat transfer of unsteady and incompressible viscous fluid over an unsteady stretching permeable surface.
Azeem Shahzad   +3 more
doaj   +1 more source

Have trends changed over time? A study of UK peak flow data and sensitivity to observation period [PDF]

open access: yesNatural Hazards and Earth System Sciences, 2019
Classical statistical methods for flood frequency estimation assume stationarity in the gauged data. However, recent focus on climate change and, within UK hydrology, severe floods in 2009 and 2015 has raised the profile of statistical analyses that ...
A. Griffin, G. Vesuviano, E. Stewart
doaj   +1 more source

Mathematical modelling of boundary layer flow over a permeable and time-dependent shrinking sheet – A stability analysis

open access: yesJournal of Mechanical Engineering and Sciences, 2022
Micropolar fluid is one type of non-Newtonian fluid which consists of non-deformable spherical particles that suspended in viscous medium. In this paper, the problem of two-dimensional boundary layer flow over a permeable shrinking sheet with time ...
J. G. Tan , Y.Y. Lok , I. Pop
doaj   +1 more source

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