Numerical schemes that preserve the structure of kinetic equations can provide stable simulation results over a long time. An electromagnetic particle-in-cell solver for Vlasov--Maxwell preserves at discrete level noncanonical Hamiltonian has been presented in [Kraus et al., J. Plasma Phys., 83 (2017)]. While original formulation obtained Cartesian coordinates, we extend to curvilinear coordina...

Severe Tropical Cyclones associated with surges frequently hits the coastal region of Bangladesh. For a reliable hydrodynamic model to simulate the severity of such cyclones, it is necessary to incorporate the meteorological and hydrological inputs properly. In order to incorporate the coastlines and the island boundaries properly in the numerical scheme a very fine grid resolution along the co...

Analytical solutions for reconnective annihilation in curvilinear geometry are presented. These solutions are characterized by current density distributions varying both along the radial and azimuthal coordinates. They represent an extension of previously proposed models, based on purely radially dependent current densities. Possible applications of these solutions to the modeling of solar flar...