نوع مقاله : مقاله پژوهشی
نویسندگان
گروه فیزیک، دانشکده علوم پایه، دانشگاه گیلان، صندوق پستی: 1914-41635، رشت - ایران
کلیدواژهها
عنوان مقاله English
نویسندگان English
In this research, the effect of simultaneous application of plasma rotation and static external magnetic field in a plasma with a power law density function on the growth rate of Rayleigh-Taylor instability (RTI) has been studied analytically. Plasma is incompressible and enclosed between two planes z=0 and z=h. In a linear growth rate regime, the dispersion relation for the ideal MHD equations was first derived by applying the rotation effect and appropriate boundary conditions. The final dispersion relation represents the effect of the simultaneous combination of the axial magnetic field and the constant angular velocity of the plasma on the RTI growth rate. The results show that the growth rate of instability depends on the horizontal component of the magnetic field, the plasma rotation, and also on the dimensionless parameter λ*. The maximum instability occurs at *=-1.5 compared to the corresponding non-rotational case. Recent results show that the simultaneous combination of rotation and static external magnetic field improves the management of instability growth rate.
کلیدواژهها English