Non-radial oscillations in an axisymmetric MHD incompressible fluid

Quasi Periodic Oscillations Due to Axisymmetric and Non-axisymmetric Shock Oscillations in Black Hole Accretion

SANDIP K. CHAKRABARTI, D. DEBNATH, P.S. PAL, A. NANDI, R. SARKAR, M.M. SAMANTA, P.J. WIITA, H. GHOSH and D. SOM S. N. Bose National Centre for Basic Sciences, JD-Block, Sector III, Salt Lake, Kolkata, 700 098, India. E-mail:[email protected] 2 Centre for Space Physics, Chalantika 43, Garia Station Rd., Kolkata 700084, India. 3 Department of Physics & Astronomy, Georgia State University, PO B...

Non-axisymmetric oscillations of roAp stars

We calculate the effect of a strong dipole magnetic field on non-axisymmetric oscillations for roAp stars, with a typical range of photospheric magnetic fields Bp [0.5-1.5] kG. As Dziembowski & Goode (1996), we find that the oscillations are strongly affected by such magnetic fields in two different ways. The first one concerns the stability of modes, which are damped due to dissipation by Alfv...

Incompressible Non-Newtonian Fluid Flows

A non-Newtonian fluid is a fluid whose flow properties differ in many ways from those of Newtonian fluids. Most commonly the viscosity of non-Newtonian fluids is not independent of shear rate or shear rate history. In practice, many fluid materials exhibits non-Newtonian fluid behavior such as: salt solutions, molten, ketchup, custard, toothpaste, starch suspensions, paint, blood, and shampoo e...

The Incompressible Laminar Axisymmetric Wake

Simulations of Incompressible Mhd Turbulence

We simulate incompressible, MHD turbulence using a pseudo-spectral code. Our major conclusions are as follows. 1) MHD turbulence is most conveniently described in terms of counter propagating shear Alfvén and slow waves. Shear Alfvén waves control the cascade dynamics. Slow waves play a passive role and adopt the spectrum set by the shear Alfvén waves. Cascades composed entirely of shear Alfvén...