TY - JOUR
T1 - The Richtmyer-Meshkov instability of a double-layer interface in convergent geometry with magnetohydrodynamics
AU - Li, Yuan
AU - Samtaney, Ravi
AU - Wheatley, Vincent
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): URF/1/2162-01
Acknowledgements: This work was supported by the KAUST Office of Sponsored Research under Award No. URF/1/2162-01.
PY - 2018/4/13
Y1 - 2018/4/13
N2 - The interaction between a converging cylindrical shock and double density interfaces in the presence of a saddle magnetic field is numerically investigated within the framework of ideal magnetohydrodynamics. Three fluids of differing densities are initially separated by the two perturbed cylindrical interfaces. The initial incident converging shock is generated from a Riemann problem upstream of the first interface. The effect of the magnetic field on the instabilities is studied through varying the field strength. It shows that the Richtmyer-Meshkov and Rayleigh-Taylor instabilities are mitigated by the field, however, the extent of the suppression varies on the interface which leads to non-axisymmetric growth of the perturbations. The degree of asymmetry of the interfacial growth rate is increased when the seed field strength is increased.
AB - The interaction between a converging cylindrical shock and double density interfaces in the presence of a saddle magnetic field is numerically investigated within the framework of ideal magnetohydrodynamics. Three fluids of differing densities are initially separated by the two perturbed cylindrical interfaces. The initial incident converging shock is generated from a Riemann problem upstream of the first interface. The effect of the magnetic field on the instabilities is studied through varying the field strength. It shows that the Richtmyer-Meshkov and Rayleigh-Taylor instabilities are mitigated by the field, however, the extent of the suppression varies on the interface which leads to non-axisymmetric growth of the perturbations. The degree of asymmetry of the interfacial growth rate is increased when the seed field strength is increased.
UR - http://hdl.handle.net/10754/627547
UR - http://www.sciencedirect.com/science/article/pii/S2468080X17301103
UR - http://www.scopus.com/inward/record.url?scp=85050151772&partnerID=8YFLogxK
U2 - 10.1016/j.mre.2018.01.003
DO - 10.1016/j.mre.2018.01.003
M3 - Article
SN - 2468-080X
VL - 3
SP - 207
EP - 218
JO - Matter and Radiation at Extremes
JF - Matter and Radiation at Extremes
IS - 4
ER -