The motion of an incompressible, viscous rotating fluid contained in a spheroidal container is studied by a direct numerical simulation in an oblate spheroidal coordinate system. An appropriate formalism is first derived which allows us to expand any scalar field in spherical harmonics and to decompose any vector field into its sphero-poloidal and sphero-toroidal scalar parts. The spinover mode...

In this paper, we jointly consider the inhomogeneity and spatial dimension in large scale wireless networks. We study the effects of topology on the throughput capacity. This problem is inherently difficult since it is complex to handle the interference caused by simultaneous transmission. To solve this problem, we, according to the inhomogeneity of topology, divide the transmission into intra-...

The low-order modes of spheroidal, pure electron plasmas have been studied experimentally, both in a cylindrical eiectrode structure and in a quadrupole trap. Comparison is made between measurements of mode frequencies, recent analytical theories, and numerical simulations. Effects considered include trap anharmonicity, image charges, and temperature. Quantitative agreement is obtained between ...

In low-frequency seismic spectra the Coriolis force theoretically causes quasi-degenerate coupling of spheroidal and toroidal modes whose spherical harmonic degrees differ by unity and whose frequencies are close. It has been found that the coupling causes clearly observable effects on seismic spectra below 3.0 mHz. Many fundamental toroidal modes have a spheroidal component and vice versa. For...

We investigate inertial mode oscillations of slowly and uniformly rotating, isentropic, Newtonian stars. Inertial mode oscillations are induced by the Coriolis force due to the star’s rotation, and their characteristic frequencies are comparable with the rotation frequency Ω of the star. So called r-mode oscillations form a sub-class of the inertial modes. In this paper, we use the term “r-mode...

This paper focuses on hydrodynamic modeling and control of spheroidal underwater vehicle. The vehicle considered in this is appendage free unstable. Water jet propulsion system used dynamics the highly unstable due to munk moment. shape robot nuclear reactor inspection, port security defence ocean surveillance where external appendages are not required. A new innovative technique, Sliding mode ...

The light curves of the high–amplitude, short– period variable stars discovered by Mateo et al. (1998) in the Carina dwarf Spheroidal Galaxy were re-analyzed to refine their properties and compare them with those of galactic stars. In spite of a different pulsation mode established by means of different PLM relationships, the Fourier parameters did not reveal a separation between the two groups...