Development of Richtmyer–Meshkov and Rayleigh–Taylor instability in the presence of magnetic field

Fluid instabilities like Rayleigh–Taylor (R–T), Richtmyer–Meshkov (R–M) and Kelvin–Helmholtz (K–H) instability can occur in a wide range of physical phenomenon from astrophysical context to Inertial Confinement Fusion (ICF). Using Layzerʹs potential flow model, we derive the analytical expressions of growth rate of bubble and spike for ideal magnetized fluid in R–T and R–M cases. In the presence of transverse magnetic field, the R–M and R–T instabilities are suppressed or enhanced depending on the direction of magnetic pressure and hydrodynamic pressure. Again the interface of two fluid may oscillate if both the fluids are conducting. However, it is observed that the magnetic field has no effect in linear case.