搜索结果: 1-15 共查到“地球物理学 turbulent”相关记录23条 . 查询时间(0.078 秒)
Modelling turbulent vertical mixing sensitivity using a 1-D version of NEMO
Modelling turbulent vertical mixing sensitivity NEMO1D
2015/3/5
Through two numerical experiments, a 1-D vertical model called NEMO1D was used to investigate physical
and numerical turbulent-mixing behaviour.
TIME-AVERAGED TURBULENT MIXING AND VERTICAL CONCENTRATION DISTRIBUTION OF HIGH-DENSITY SUSPENSIONS FORMED UNDER WAVES
high density suspension vertical concentration distribution turbulent mixing turbulent kinetic energy waves silt
2014/4/8
We analyzed oscillating flow data from U-tube experiments by Lamb et al. (2004) and found that the time-averaged turbulent kinetic energy (TKE) near bed decreased exponentially with height above the b...
Flux-gradient relationship for turbulent dispersion over complex terrain
Flux-gradient relationship turbulent dispersion complex terrain
2009/11/16
The transfer of a passive tracer in inhomogeneous turbulent flow is investigated. Starting from Lumley's constitutive equation, we derived an expression for the ratio between the effective eddy diffus...
The evolution of a thermocline effected by a turbulent stream
evolution of a thermocline turbulent stream
2009/11/16
The process of thermocline evolution under the action of turbulent stream in the upper layer is investigated in laboratory experiment in thermally stratified tank, the initial temperature profile with...
On the influence of a large scale coherent vortex on the turbulent cascade
large scale coherent vortex turbulent cascade
2009/11/16
We investigate the flow between coaxial rotating disks in the situation where a strong axial vortex is present over a turbulent background. This is nonstationary and inhomogeneous as is common in most...
Structure function measurements of the intermittent MHD turbulent cascade
Structure function measurements intermittent MHD turbulent cascade
2009/11/13
The intertmittent nature of turbulence within solar wind plasma has been demonstrated by several studies of spacecraft data. Using magnetic field data taken in high speed flows at high heliographic la...
Modelling of large-scale structures arising under developed turbulent convection in a horizontal fluid layer(with application to the problem of tropical cyclone origination)
large-scale structures arising developed turbulent convection horizontal fluid layer
2009/11/12
The work is concerned with the results of theoretical and laboratory modelling the processes of the large-scale structure generation under turbulent convection in the rotating-plane horizontal layer o...
On the properties of turbulent boundary layer over polar cusps
properties of turbulent boundary layer polar cusps
2009/11/12
We study properties of nonlinear magnetic fluctuations in the turbulent boundary layer (TBL) over polar cusps during a typical TBL crossing on 19 June 1998. Interball-1data in the summer TBL are compa...
Oscillating grids turbulence generator for turbulent transport studies
grids turbulence generator turbulent transport studies
2009/11/12
An oscillating grids turbulence generator was constructed for studies of two new effects associated with turbulent transport of particles, turbulent thermal diffusion and clustering instability. These...
Turbulent thermal diffusion of aerosols in geophysics and in laboratory experiments
Turbulent thermal diffusion aerosols geophysics laboratory experiments
2009/11/11
We discuss a new phenomenon of turbulent thermal diffusion associated with turbulent transport of aerosols in the atmosphere and in laboratory experiments. The essence of this phenomenon is the appear...
Crossing a narrow-in-altitude turbulent auroral acceleration region
narrow-in-altitude turbulent auroral acceleration region
2009/11/11
We report on the in situ identification of a narrow electrostatic acceleration layer (electrostatic shock) containing intense plasma turbulence in the upward current region, and its effect on auroral ...
Nonlinear dynamics of turbulent waves in fluids and plasmas
Nonlinear dynamics turbulent waves fluids plasmas
2009/11/9
In a model drift wave system that is interesting both in fluids and plasmas, we find that an embedded moving saddle point plays an important role at the onset of turbulence. Here the saddle point is a...
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...
Universal dependences between turbulent and mean flow parameters instably and neutrally stratified Planetary Boundary Layers
Universal dependences mean flow parameters stratified Planetary Boundary Layers
2009/11/9
We consider the resistance law for the planetary boundary layer (PBL) from the point of view of the similarity theory. In other words, we select the set of the PBL governing parameters and search for ...
On the dependence of third- and fourth-order moments on stability in the turbulent boundary layer
third- and fourth-order moments on stability turbulent boundary layer
2009/11/9
Analysis of published data on the third- and fourth-order moments of vertical velocity in the atmospheric boundary layer is performed, and it is shown that turbulence is non-Gaussian even when almost ...