4,318 research outputs found
Distributed simulation of city inundation by coupled surface and subsurface porous flow for urban flood decision support system
We present a decision support system for flood early warning and disaster
management. It includes the models for data-driven meteorological predictions,
for simulation of atmospheric pressure, wind, long sea waves and seiches; a
module for optimization of flood barrier gates operation; models for stability
assessment of levees and embankments, for simulation of city inundation
dynamics and citizens evacuation scenarios. The novelty of this paper is a
coupled distributed simulation of surface and subsurface flows that can predict
inundation of low-lying inland zones far from the submerged waterfront areas,
as observed in St. Petersburg city during the floods. All the models are
wrapped as software services in the CLAVIRE platform for urgent computing,
which provides workflow management and resource orchestration.Comment: Pre-print submitted to the 2013 International Conference on
Computational Scienc
Spectral wings of the fiber supercontinuum and the dark-bright soliton interaction
We present experimental and numerical data on the supercontinuum generation
in an optical fiber pumped in the normal dispersion range where the seeded dark
and the spontaneously generated bright solitons contribute to the spectral
broadening. We report the dispersive radiation arising from the interaction of
the bright and dark solitons. This radiation consists of the two weak
dispersing pulses that continuously shift their frequencies and shape the short
and long wavelength wings of the supercontinuum spectrum.Comment: supercontinuum, soliton, fiber; 6 page
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