We investigate whether dual strings could be solutions of the magnetohydrodynamics equations in the limit of infinite conductivity. We find that the induction equation is satisfied, and we discuss the Navier-Stokes equation (without viscosity) with the Lorentz force included. We argue that the dual string equations (with a non-universal maximum velocity) should describe the large scale motion o...

Relativistic magnetohydrodynamics (RMHD) provides an extremely useful description of the low-energy long-wavelength phenomena in a variety physical systems from quark-gluon plasma heavy-ion collisions to matters supernovas, compact stars, and early universe. We review recent theoretical progresses RMHD, such as formulation RMHD perspective magnetic flux conservation using entropy-current analys...

The magnetorotational instability (MRI) is considered to be one of the most powerful sources turbulence in hydrodynamically stable quasi-Keplerian flows, such as those governing accretion disk flows. Although linear stability these flows with applied external magnetic field has been studied for decades, influence on outward angular momentum transport, necessary disk, still not well known. In th...

Measurements of the internal distribution of B in magnetically confined plasmas are required to obtain current profiles via equilibrium reconstruction with sufficient accuracy to challenge stability theory. A 16-channel linear array of InSb Hall effect sensors with 7.5 mm spatial resolution has been constructed to directly measure internal B(z)(R,t) for determination of J(ψ,t) associated with e...

Confining dense plasma in a field reversed configuration (FRC) is considered a promising approach to fusion. Numerical simulation of this process requires setting artificial boundary conditions (ABCs) for the magnetic field because whereas the plasma itself occupies a bounded region (within the FRC coils), the field extends from this region all the way to infinity. If the plasma is modeled usin...

Magnetic reconnection is a fundamental process in laboratory, magnetospheric, solar and astrophysical plasma, whereby magnetic energy converted into heat, bulk kinetic fast particle energy. Its nature two dimensions much better understood than three (3D), where its character completely different has many diverse aspects that are currently being explored. Here we focus on the magnetohydrodynamic...

We extend existing 2-D analytical high-b equilibrium solutions obtained by Cowley et al. [Phys. Fluids B 3, 2066 (1991)] and Hsu et al. [Phys. Plasmas 3, 266 (1996)] to the case of toroidally flowing plasma, assuming ideal magnetohydrodynamics and isothermal magnetic surfaces. Invoking the ordering bq 2 and M /q2 , we solve the boundary layer problem, re-obtaining the static solution in the zer...

A computer code to investigate the equilibrium and stability of a diffuse plasma in three dimensions is described that generalizes earlier work on a sharp free boundary model. Toroidal equilibria of a plasma are determined by considering paths of steepest descent associated with a new version of the variational principle of magnetohydrodynamics that involves mapping a fixed coordinate domain on...