搜索结果: 1-15 共查到“固体地球物理学 flows”相关记录18条 . 查询时间(0.167 秒)
Using the level set method in geodynamical modeling of multi-material flows and Earth's free surface
Tracking the material surface flow modeling multi - material flow modeling the level set function
2015/1/6
The level set method allows for tracking material surfaces in 2-D and 3-D flow modeling and is well suited for applications of multi-material flow modeling. The level set method utilizes smooth level ...
New developments in the analysis of column-collapse pyroclastic density currents through numerical simulations of multiphase flows
column-collapse pyroclastic density currents numerical simulations of multiphase flows
2015/1/4
A granular multiphase model has been used to evaluate the action of differently sized particles on the dynamics of fountains and associated pyroclastic density currents. The model takes into account t...
On the application of kinematic models to simulate the diffusive processes of debris flows
On the application kinematic models simulate the diffusive processes debris flows
2010/10/21
Debris flows generally propagate along steep mountain torrents with dynamics primarily governed by gravitational and frictional forces. Thus, debris flows modelling can be successfully performed throu...
Dynamics of large-amplitude geostrophic flows over bottom topography
large-amplitude geostrophic flows bottom topography
2009/11/13
We examine the interaction of near-surface and near- bottom flows over bottom topography. A set of asymptotic equations for geostrophic currents in a three-layer fluid is derived. The depths of the ac...
On the Hamiltonian approach:Applications to geophysical flows
Hamiltonian approach Applications to geophysical flows
2009/11/13
This paper presents developments of the Harniltonian Approach to problems of fluid dynamics, and also considers some specific applications of the general method to hydrodynamical models. Nonlinear gau...
Gradient evolution for potential vorticity flows
Gradient evolution potential vorticity flows
2009/11/12
Two-dimensional unsteady incompressible flows in which the potential vorticity (PV) plays a key role are examined in this study, through the development of the evolution equation for the PV gradient. ...
Viscous heating in fluids with temperature-dependent viscosity:implications for magma flows
Viscous heating in fluids temperature-dependent viscosity magma flows
2009/11/12
Viscous heating plays an important role in the dynamics of fluids with strongly temperature-dependent viscosity because of the coupling between the energy and momentum equations. The heat generated by...
Stochastic parametric resonance in shear flows
Stochastic parametric resonance shear flows
2009/11/11
Time-periodic shear flows can give rise to Parametric Instability (PI), as in the case of the Mathieu equation (Stoker, 1950; Nayfeh and Mook, 1995). This mechanism results from a resonance between th...
Modelling lava flows by Cellular Nonlinear Networks (CNN):preliminary results
lava flows Cellular Nonlinear Networks (CNN) preliminary results
2009/11/9
The forecasting of lava flow paths is a complex problem in which temperature, rheology and flux-rate all vary with space and time. The problem is more difficult to solve when lava runs down a real top...
Turbulence in nearly incompressible fluids:density spectrum,flows,correlations and implication to the interstellar medium
nearly incompressible fluids density spectrum flows correlations implication interstellar medium
2009/11/9
Interstellar scintillation and angular radio wave broadening measurements show that interstellar and solar wind (electron) density fluctuations exhibit a Kolmogorov-like k-5/3 power spectrum extending...
On effect of precession-induced flows in the liquid core for early Earth's history
precession-induced flows liquid core early Earth's history
2009/11/9
Secondary and tertiary flow patterns seen in experiments simulating flow in the Earth's liquid core induced by luni-solar precession of the solid mantle (Vanyo et al., 1995) hint at the development of...
Recently found unstable time-periodic solutions to the incompressible Navier-Stokes equation are reviewed to discuss their relevance to plane Couette turbulence and isotropic turbulence. It is shown t...
On statistical equilibrium in helical fluid flows
statistical equilibrium helical fluid flows
2009/11/9
The statistical mechanics of 3-D helical flows is re-examined for a continuum truncated at a top wavenumber. Based on the principle of equipartition of the flow enstrophy between helical modes, the em...
Experimental detection of turbulent thermaldiffusion of aerosols in non-isothermal flows
Experimental detection turbulent thermaldiffusion of aerosols non-isothermal flows
2009/11/9
We studied experimentally a new phenomenon of turbulent thermal diffusion of particles which can cause formation of the large-scale aerosol layers in the vicinity of the atmospheric temperature invers...
Anisotropic turbulence and zonal jets in rotating flows with a β-effect
Anisotropic turbulence zonal jets rotating flows β-effect
2009/11/9
Numerical studies of small-scale forced, two-dimensional turbulent flows on the surface of a rotating sphere have revealed strong large-scale anisotropization that culminates in the emergence of quasi...