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The formation of asteroid satellites in large impacts:results from numerical simulations
Asteroids Collisional physics Impact processes Satellites general
2015/12/25
We present results of 161 numerical simulations of impacts into 100-km diameter asteroids, examining debris trajectories to search for the formation of bound satellite systems. Our simulations utilize...
Numerical simulations of granular dynamics II:Particle dynamics in a shaken granular material
Asteroids, Surfaces Collisional physics Geological processes Regoliths Experimental techniques
2015/12/25
Surfaces of planets and small bodies of our Solar System are often covered by a layer of granular material that can range from a fine regolith to a gravel-like structure of varying depths. Therefore, ...
Towards self-organization of decaying surface corrugations: A numerical study
A numerical study self-organization
2015/12/11
We study numerically the interplay of surface topography and kinetics in the relaxation of crystal
surface corrugations below roughening in two independent space dimensions. The kinetic processes
ar...
Self-organization of decaying surface corrugations:A numerical study
Self-organization decaying surface corrugations numerical study
2015/10/16
We study numerically the interplay of surface topography and kinetics in the relaxation of crystal surface corrugations below roughening in two independent space dimensions. The kinetic processes are ...
Deriving numerical estimates from descriptive information: the computation of earthquake parameters
macroseismic epicenter epicentral intensity macroseismic magnitude
2015/9/30
We describe here how the origin time, the epicenter location, the epicentral intensity and the magnitude of the earthquakes included in the Catalogue of Strong Italian Earthquakes (CFTI3) have been de...
Growth and subsidence of carbonate platforms: numerical modelling and application to the Dolomites, Italy
lithospheric flexure differential compaction Triassic
2015/9/15
The phenomenon of subsidence induced by the growth of carbonate platforms has been investigated with the aid of numerical modelling. The research aimed to quantify the relative contribution of this pr...
Numerical simulation of explosive volcanic eruptions from the conduit flow to global atmospheric scales
numerical modeling explosive volcanic eruptions conduit flow multiphase flow simulation stratospheric sulfate aerosol
2015/9/10
Volcanic eruptions are unsteady multiphase phenomena, which encompass many inter-related processes across the
whole range of scales from molecular and microscopic to macroscopic, synoptic and global....
Numerical model of gas dispersion emitted from volcanic sources
gas dispersion volcanic gas K-theory computer model
2015/9/10
An Eulerian model for passive gas dispersion based on the K-theory for turbulent diffusion, coupled with a mass
consistent wind model is presented. The procedure can be used to forecast gas concentra...
Numerical 2D modeling of site responsein Dinar Graben, Southwest Turkey,and comparison with observations
2D modeling basin edge effect Dinar site response
2015/9/10
The October 1, 1995 Dinar earthquake (ML=5.9) caused extensive damage within a limited area in Dinar town located
in southwestern Turkey. Graben structure of the damaged area suggests the basin edge ...
Numerical simulation of lava flow using a GPU SPH model
GPGPU modeling HPC SPH hazard lava
2015/8/27
A smoothed particle hydrodynamics (SPH) method for lava-flow modeling was implemented on a graphical processing unit (GPU) using the compute unified device architecture (CUDA) developed by NVIDIA. Thi...
Singularly perturbed systems of ordinary di erential equations arise in many
biological, physical and chemical systems. We present an example of a singu-
larly perturbed system of ordinary di erenti...
Numerical Modelling of Contaminant Transport Hydrodynamics
runoff contamination environment numerical modelling real-time simulation forecasting hydrodynamic management
2015/8/14
Modelling of contaminant transport on watersheds is a problem of concern with regard to the protection of water ecosystems. This paper presents a numerical model, using the finite element method, to s...
Numerical solution of a two-disk problem
Numerical solution control system and feedback compensator Fahrenheit convex programming numerical Fahrenheit programming
2015/8/12
A multidisk problem in frequency domain control system synthesis is a problem in which the designer wishes to find a feedback compensator that minimizes the H_infty-norm of a certain transfer matrix r...
Numerical methods for H_2 related problems
Numerical convex programming quantity convex programming application
2015/8/12
Recent results have shown that several H_2 and H_2-related problems can be formulated as convex programs with a finite number of variables. We present an interior point algorithm for the solution of t...
Verifications of the high-resolution numerical model and polarization relations of atmospheric acoustic-gravity waves
high-resolution numerical model polarization relations
2015/8/6
Comparisons of amplitudes of wave variations of
atmospheric characteristics obtained using direct numerical
simulation models with polarization relations given by conventional theories of linear aco...