搜索结果: 1-15 共查到“理学 Vorticity”相关记录96条 . 查询时间(0.031 秒)
The downstream evolution of the vorticity field in the vicinity of hairpinshaped regions of rotational motion appearing in the transitioning boundary layer is examined. It is shown that the dynamics o...
CycloTRACK (v1.0) – tracking winter extratropical cyclones based on relative vorticity: sensitivity to data filtering and other relevant parameters
winter extratropical cyclones relative vorticity sensitivity to data filtering other relevant parameters
2014/12/19
In this study we present a new cyclone identification and tracking algorithm, cycloTRACK. The algorithm describes an iterative process. At each time step it identifies all potential cyclone centers, d...
Inherently mass-conservative version of the semi-Lagrangian absolute vorticity (SL-AV) atmospheric model dynamical core
Inherently mass-conservative version semi-Lagrangian absolute vorticity
2014/12/18
The semi-Lagrangian absolute vorticity (SL-AV)
atmospheric model is the global semi-Lagrangian hydrostatic model used for operational medium-range and seasonal
forecasts at the Hydrometeorological C...
Encoding many channels in the same frequency through radio vorticity: first experimental test
Encoding many channels frequency through radio vorticity experimental test
2011/10/18
We have shown experimentally that it is possible to propagate and use the properties of twisted non-monochromatic incoherent radio waves to simultaneously transmit to infinity more radio channels on t...
Encoding many channels in the same frequency through radio vorticity: first experimental test
channel frequency first experimental test
2011/8/4
Abstract: We have shown experimentally that it is possible to propagate and use the properties of twisted non-monochromatic incoherent radio waves to simultaneously transmit to infinity more radio cha...
Particle trajectories beneath small amplitude shallow water waves in constant vorticity flows
Particle trajectories small amplitude vorticity flows
2011/9/14
We investigate the particle trajectories in a constant vorticity shallow water flow over a flat bed as periodic waves propagate on the water’s free surface. Within the framework of small amplitude wav...
Particle trajectories beneath small amplitude shallow water waves in constant vorticity flows
Particle trajectories beneath small amplitude constant vorticity flows Fluid Dynamics
2011/7/26
Abstract: We investigate the particle trajectories in a constant vorticity shallow water flow over a flat bed as periodic waves propagate on the water's free surface. Within the framework of small amp...
Elliptic and hyperelliptic functions describing the particle motion beneath small-amplitude water waves with constant vorticity
Elliptic hyperelliptic function particle motion beneath small-amplitude water waves
2011/7/26
Abstract: We provide analytic solutions of the nonlinear differential equation system describing the particle paths below small-amplitude periodic gravity waves travelling on a constant vorticity curr...
The formation of west Pacific tropical cyclone Nuri (2008) was observed over four days from easterly wave to typhoon stage by aircraft using scanning Doppler radar and dropsonde data. This disturbance...
Two-Point Vorticity Statistics in the Inverse Turbulent Cascade
Two-Point Vorticity Statistics Inverse Turbulent Cascade
2010/12/28
We present a statistical analysis of the two-point vorticity probability density of the vorticity eld generated in the inverse cascade of stationary two-dimensional turbulence.
Aims. We use magnetic and non-magnetic 3D numerical simulations of solar granulation and G-band radiative diagnostics from the resulting models to analyse the generation of small-scale vortex motions ...
Point symmetry group of the barotropic vorticity equation
Point symmetry group barotropic vorticity equation
2010/12/1
The complete point symmetry group of the barotropic vorticity equation on the -plane is computed using the direct method supplemented with two different techniques.
Restrictions on the geometry of the periodic vorticity equation
Non-metric Euler equation geodesic flow diffeomor-phism group of the circle
2010/11/30
We prove that several evolution equations arising as mathematical models for fluid motion cannot be realized as metric Euler equations on the Lie group Diff1(S1) of all smooth and orientation-preservi...
High resolution numerical study of the Algiers 2001 flash flood: sensitivity to the upper-level potential vorticity anomaly
Algiers flash flood
2010/1/27
From 9 to 11 November 2001, intense cyclogenesis affected the northern coasts of Africa and more particularly the densely populated city of Algiers. During the morning of 10 November, more than 130 mm...
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. ...