We present a dynamomechanism arising from the presence of barotropically unstable zonal jet currents in a rotating spherical shell. The shear instability of the zonal flow develops in the form of a global Rossby mode, whose azimuthal wavenumber depends on the width of the zonal jets. We obtain self-sustained magnetic fields at magnetic Reynolds numbers greater than 10. We show that the propagat...

We propose a mathematical model of vibration elastic systems formed by conjugated shells revolution with different geometry in the field combined static axisymmetric loads. The is based on concepts geometrically nonlinear theory mean bending and realized within framework classical Kirchhoff–Love use contemporary methods applied mathematics numerical analysis. spectral picture shell structure el...

The infrared (IR) heating method for a central ignition target with spherical symmetry is modified the axisymmetric Fast Ignition Realization EXperiment (FIREX) target. challenge that FIREX pretends to be thermally shell. Our previous simulation studies (A. Iwamoto et al., Fusion Sci. Technol. 56, 427 (2009), A. J. Phys.: Conf. Ser. 244, 032039 (2010)) have shown combination of volumetric in fu...

By using an axisymmetric model, we numerically investigate the underlying fluid dynamics of a salp-like swimmer consisting deformable shell, front valve, and back valve. Through coordinated shell inflation/deflation valve opening/closing, uni-directional flow is created inside body in wake, which provides thrust for forward motion. Our results prove that this method capable sustained locomotion...

A variant of the rotation shell in particular form a closed circular cylindrical shell, which is often used design practice civil, power and other industrial structures, considered. The specificity considered lies features its material, has manifestation dual anisotropy. In particular, this material orthotropic structure, nature deformation shows dependence stiffness strength on type stress sta...

For shallow caps under an axisymmetric external pressure distribution which is inward (with a representative magnitude pO) in a neighborhood of the pole and outward away from the pole, it has been shown previously that a finite axisymmetric dimple state of deformation is possible if p0 is at least of the order of the classical buckling pressure for a complete spherical shell, Pi, and that, asym...

In the recently introduced Variable-Shape heaving wave energy converters, buoy changes its shape actively in response to changing incident waves. this study, a Lagrangian approach for dynamic modeling of spherical Wave Energy Converter is described. The classical bending theory used write stress–strain equations flexible body using Love’s approximation. elastic shell assumed have an axisymmetri...