Plane compressible MHD flows

Linear instability of compressible plane Couette flows

The stability of compressible plane Couette flow, which is a simple case of hypersonic wall-bounded shear flows, is not well understood even though incompressible Couette flow has been studied extensively by linear stability analysis and shown to be stable to linear disturbances. As a first step in studying the stability of three-dimensional hypersonic boundary layers, this paper studies the te...

Compressible dynamics of magnetic field lines for incompressible MHD flows

It is demonstrated that the deformation of magnetic field lines in incompressible magnetohydrodynamic flows results from a compressible mapping. Appearance of zeroes for the mapping Jacobian correspond to the breaking of magnetic field lines, associated with local blowup of the magnetic field. The possibility of such events is found to be unlikely in two dimensions but not in three dimensions. ...

Dissipation in Compressible Mhd Turbulence

We report results of a three dimensional, high resolution (up to 512) numerical investigation of supersonic compressible magnetohydrodynamic turbulence. We consider both forced and decaying turbulence. The model parameters are appropriate to conditions found in Galactic molecular clouds. We find that the dissipation time of turbulence is of order the flow crossing time or smaller, even in the p...

A Two -Step Modification toward Implementing Compressible Source Terms in Low Compressible Flows

Implementation of a 3d Compressible Mhd Solver Able to Model Transonic Flows

Carlos M. Xisto, José C. Páscoa, Paulo J. Oliveira and Davide A. Nicolini University of Beira Interior, Electromechanical Engineering Department R. Mq.s DÁvila e Bolama, 6201-001 Covilhã, Portugal e-mail: [email protected], [email protected], [email protected] European Space Agency Directorate of Science and Robotic Exploration ESTEC, Keplerlaan 1, 2201AZ Noordwijk, The Netherlands e-mail: davide.nicolini@esa...