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3D ray tracing solver for communication blackout analysis in atmospheric entry missions
Poedts, Stefaan; Giangaspero, Vincent F.; Sharma, Vatsalya +4 more
During the atmospheric entry phase at hypersonic speed, the radio communication from/to a space vehicle can be disrupted due to the formation of a plasma sheath within the surrounding flow field. In order to characterize such communication blackout phases, this work presents a numerical methodology combining Computational Fluid Dynamic (CFD) simul…
Geliosphere - parallel CPU and GPU based models of cosmic ray modulation in the heliosphere
Solanik, Michal; Bobík, Pavol; Genči, Ján
We present Geliosphere, a numerical model of the modulation of cosmic rays in the heliosphere. The current version of Geliosphere implements the stochastic differential equation method to solve Parker's equation. Sets of 1D and 2D models of Geliosphere solve Parker's equation in a backward-in-time manner for 2D models and in a backward-in-time and…
A Simflowny-based high-performance 3D code for the generalized induction equation
Viganò, Daniele; Pons, José A.; Martínez-Gómez, David +6 more
In the interior of neutron stars, the induction equation regulates the long-term evolution of the magnetic fields by means of resistivity, Hall dynamics and ambipolar diffusion. Despite the apparent simplicity and compactness of the equation, the dynamics it describes is not trivial and its understanding relies on accurate numerical simulations. W…
Cometary gas and plasma flow with detailed chemistry.
Huebner, W. F.; Wegmann, R.; Schmidt, H. U. +1 more
This paper describes recent hydrodynamic and magnetohydrodynamic (MHD) simulations for the gas and plasma flow around a comet with detailed photo and chemical reaction network of 59 neutral and 76 ionized chemical species. The method allows for a separate energy balance of the electrons, separate flow of neutral gas, fast neutral atomic and molecu…